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Best AR Bolt Carrier Group

What is AR Bolt Carrier Group? 🌟

It is a vital component of an AR15 rifle. It is primarily responsible for the operation and function of the rifle.

Our Top Pick
Aero Precision Grendel Bolt Carrier Group
Constructed with 8620 steel, these BCGs are designed to last a lifetime. Featuring an M16-cut bolt carrier and treated with black nitride finish, they provide enhanced durability while requiring minimal maintenance. You won't have to worry about frequent cleaning or lubrication since your components will remain in pristine condition for much longer!
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If you click this link and make a purchase, we earn a commission at no additional cost to you.

Watch this video to find more information πŸ’»

Features βŒ›

🎯 The BCG is one of the key features that differentiate an AR-15 from other small arms platforms. It enables shooters to quickly and easily cycle ammunition rounds with swift and accurate shots.

🎯 Additionally, because of its unique design, the AR-15 BCG offers users a lightening fast response time when compared to more traditional firearms.

🎯 In order to function correctly and consistently, it is machined from high-grade steel material. This ensures that all pieces are tough enough to handle the rigours of intense shooting sessions without breaking down or becoming misaligned over time.

🎯 Many manufacturers also utilize a nitride process to increase durability further and reduce wear on these parts over time, which makes them even more reliable in long-term use or during extended shooting sessions.

🎯 Another advantage of choosing BCG is its ambidextrous compatibility. This allows right and left-handed shooters alike to efficiently operate their rifles without needing any additional modifications or parts replacements.

🎯 A quality BCG can also be easily disassembled for cleaning purposes while also allowing users to replace broken or worn-out parts with relative ease at a minimal cost.

We believe this video can be helpful for youπŸ“Ί

How to Reassemble a BCG? πŸ”‹

βœ… The first step is to gather all the parts you’ll need for reassembly. This includes the charging handle, firing pin, cam pin, bolt carrier key screws and washers, extractor spring and plunger, and finally the bolt itself. Make sure all components are thoroughly cleaned with a light coat of oil before assembly.

βœ… Once all of the components are ready to go you can begin reassembling the BCG.

  • πŸ“ Begin by inserting the firing pin from the rear end of the bolt carrier, making sure that it goes all the way through until it seats in its housing at the front end of the bolt carrier.
  • πŸ“ Next insert the cam pin into its slot in front of where you just inserted the firing pin – make sure that it’s pushed all the way into position or it could cause serious feeding problems later on.

βœ… After inserting both pins you can attach your charge handle by sliding it onto its rail on top of the bolt carrier, securing it with its retaining clip at either side if necessary.

βœ…Once everything is in place slide your extractor spring and plunger into their slot at one end of your BCG – don’t forget to add a dab of lubricant here too!

βœ… Finally, place your bolt atop these components and secure everything together using two small bolts connected via washers on either side. Make sure these bolts are tightened securely so as not to come loose under heavy use or when exposed to strong forces such as recoil from firing rounds.

βœ… Once all that is complete you should check for any signs of play between any moving parts by working them back and forth with your fingers or a small tool like a screwdriver blade – if there is any looseness then tighten up those screws until everything fits snugly together again.

We can assure you that this video will certainly clarify the process πŸ“Ί

Top 21 πŸ’£ Bolt Carrier Group AR 15 / AR 10

1# Aero Precision Grendel Bolt Carrier Group

Aero Precision Grendel Bolt Carrier Group

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Specification

Color: Black
Finish: Nitride
Fabric/Material: 8620 Steel
Caliber: 6.5mm Grendel
Gun Model: AR-15

If you’re in the market for a top-quality bolt carrier group (BCG) for your AR-platform rifle, consider the Aero Precision 6.5 Grendel BCG in Black Nitride. These BCGs are made from 8620 steel and feature an M16-cut bolt carrier, making them incredibly durable. They’re also treated with a black nitride finish, which means they won’t need as much cleaning or lubrication as untreated bolts. The 6.5 Grendel bolt is made from Carpenter 158 tool steel, making it just as tough as the carrier. This would be a great option for anyone who is looking to upgrade their existing AR or build a new one from scratch. Either way, you can’t go wrong with the Aero Precision 6.5 Grendel BCG.

Video review

Pros:
  • Made from 8620 steel and treated with a black nitride finish
  • Minimizes the need for lubricants and cleaning
  • M16-cut bolt carrier for durability
  • Bolt is made from Carpenter 158 tool steel
  • Black o-ring insert on the extractor
Cons:
  • May be too heavy for some ARs
  • Bolt may be difficult to extract in extreme weather conditions

 

2# FosTech Outdoors AR-15 Complete Lite Bolt Carrier Group

FosTech Outdoors AR-15 Complete Lite Bolt Carrier Group

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Specification

Finish: Nickel Boron
Gun Model: AR-15

The FosTech Outdoors AR-15 Complete Lite Bolt Carrier Group is an excellent choice if you need a top-quality bolt carrier group for your AR-15. This BCG is designed to work with any standard full-auto AR-15 rifle and is constructed from durable nickel boron. The low-mass design of this BCG makes it ideal for use in lightweight rifles, and the Nickel Boron finish reduces friction and wear. Whether you’re a competitive shooter or simply want a reliable BCG for your AR-15, the FosTech Outdoors AR-15 Complete Lite Bolt Carrier Group is a great choice.

Video review

Pros:
  • The low-mass design makes it ideal for lightweight rifles
  • Nickel Boron finish reduces friction and wear
  • Durable construction
  • Lasts through many years of use
Cons:
  • May be too lightweight for some AR-15 rifles
  • Expensive

 

3# Angstadt Arms AR-15 9MM Bolt Carrier Group

Angstadt Arms AR-15 9MM Bolt Carrier Group

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Specification

Color: Black
Fabric/Material: 8620 Alloy Steel
Caliber: 9mm Luger
Gun Make: Colt, Glock
Gun Model: AR-15
Hand: Right
Additional Features: Features removable weight for use with Law Tactical folding stock adapter

The Angstadt Arms AR-15 9MM Bolt Carrier Group is a top-quality choice for those looking to upgrade or replace their current bolt carrier group. This unit is compatible with both Colt and Glock style dedicated 9mm AR-15 lower receivers and features a black nitride finish for durability and corrosion resistance. The carrier itself is crafted from 8620 steel for strength and reliability, while the bolt is made from tough steel for increased lifespan. Additionally, this Bolt Carrier Group features a removable weight, making it perfect for use with the Law Tactical folding stock adapter.

Pros:
  • Compatible with Colt and Glock style AR-15s
  • Black nitride finish for durability and corrosion resistance
  • Crafted from 8620 steel for strength and reliability
  • Bolt is made from tough steel for increased lifespan
  • Removable weight
Cons:
  • Not as tough as some other bolt carrier groups
  • May not stand up to extended use
  • Expensive

 

4# JP Enterprises Complete JPBC Bolt Carrier Group

JP Enterprises Complete JPBC Bolt Carrier Group

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Specification

Fabric/Material: Stainless Steel
Caliber: .308 Caliber
Gun Model: AR-10
Gun Frame Size: Large
Hand: Right

If you’re searching for a high-quality, trustworthy bolt carrier group for your police duty rifle or any other application where dependability is essential, the JP Enterprises Complete JPBC Bolt Carrier Group is precisely what you need. This top-of-the-line carrier is made from 416 stainless steel and features a Full Mass Operating System (FMOS) design, which offers numerous advantages over standard Mil-spec carriers. The JPBC-2 is significantly heavier than a standard .308 carrier, making it ideal for rifles that need more mass regulation. It also features extended forward assist serrations and a dust cover notch, as well as a 100% increase in bearing surface for smoother operation and improved alignment. Additionally, the JPBC-5 features a longer Mil-spec cocking pad for increased reliability. So if you need a high-quality, reliable bolt carrier group that will give you years of trouble-free service, the JP Enterprises Complete JPBC Bolt Carrier Group is a perfect choice.

Pros:
  • Made from 416 stainless steel
  • Ideal for rifles that need more mass regulation
  • Features extended forward assist serrations and a dust cover notch
  • 100% increase in bearing surface for smoother operation and improved alignment
  • Longer Mil-spec cocking pad for increased reliability
Cons:
  • May be too heavy for some applications
  • High price

 

5# RISE Armament AR-15 Bolt Carrier Group

RISE Armament AR-15 Bolt Carrier Group

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Specification

Individually MPI tested
Bolt: 9310 MPI tested
Carrier: 8620 tool steel heat treated and case hardened
Gas key: tool steel – grade 8 hardened fasteners and staked properly
Cam pin: 4140 steel
Extractor: tool steel – shot peened

The RISE Armament Bolt Carrier Group will help you achieve the level of performance you are hoping for with your AR-15 rifle. These high-quality BCGs are made from steel parts that are heat-treated and hardened and feature a Grade 8 gas key for enhanced reliability. Each unit is individually MPI tested to ensure quality and performance, so you can be confident that you’re getting a great product. The RISE Armament AR-15/M-16 BCG is a great way to upgrade your rifle and improve your shooting experience.

Video review

Pros:
  • Steel parts are heat-treated and hardened
  • Grade 8 gas key for enhanced reliability
  • Extractor: tool steel – shot peened
  • Individually MPI tested for quality assurance
Cons:
  • May be difficult to install
  • Quality may not be as good as other brands

 

6# CMC Triggers Enhanced AR Bolt Carrier Group

CMC Triggers Enhanced AR Bolt Carrier Group

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Specification

Color: Black
Fabric/Material: Hardened 8620 Steel
Gun Make: AR Platform
Gun Model: M16, AR-15

Ready to improve your AR-15’s performance? Check out the enhanced bolt carrier group! The CMC Triggers Enhanced AR Bolt Carrier Group is the perfect choice for you. This top-of-the-line BCG is designed for shooters who demand superior performance and reliability from their firearms components. CMC Triggers is a leading manufacturer of high-quality firearms components, and they’ve designed the Enhanced AR Bolt Carrier Group with that same commitment to quality in mind. The carrier assembly features a flared rear design that reduces carrier tilt/cant during recoil, and the increased mass ensures proper gas pressures and extraction when shooting suppressed or short-barreled rifles. The case-hardened 8620 steel construction is durable and long-lasting, so you can rest assured that this BCG will stand up to any challenges you throw its way. If you want to take your AR’s performance to the next level, don’t miss out on the CMC Triggers Enhanced AR Bolt Carrier Group.

Video review

Pros:
  • Superior performance
  • Increased mass for proper gas pressures and extraction
  • Reduced carrier tilt/cant during recoil
  • Durable construction
Cons:
  • Not available in a left-handed version
  • May be too heavy for some ARs

 

7# 2A Armament AR15 Regulated Bolt Carrier Group

2A Armament AR15 Regulated Bolt Carrier Group

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Specification

Finish: Nitride
Fabric/Material: 8620 Alloy Steel
Caliber: 5.56x45mm NATO
Gun Model: AR-15

Looking for a top-quality, lightweight solution for your AR-15’s gas system? Look no further than the 2A Armament AR15 Regulated Bolt Carrier Group! This drop-in carrier comes with a gas regulating gate built right into the carrier itself, so you can adjust it from fully open to fully closed. There’s no need for adjustable gas blocks with this carrier group – just set it and forget it! The 2A Armament AR-15 Advanced Bolt Carrier Group is built from high-quality steel and QPQ Nitride that has been heating treated with extreme durability and extra lubrication for a smooth shot every time. Choose the 2A Armament Regulated BCG for a fully adjustable, lightweight enhancement for your favourite AR15 rifle!

Video review

Pros:
  • Fully adjustable
  • Easy to use
  • Durable
  • Smooth shot
Cons:
  • May be too lightweight for some AR-15s
  • Requires a T-6 Torx tool for adjustment

 

8# ODIN Works AR10 Black Nitride Bolt Carrier Group

ODIN Works AR10 Black Nitride Bolt Carrier Group
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Specification

Color: Black
Finish: Nitride
Fabric/Material: Steel
Caliber: Universal
Gun Model: AR-15

The ODIN Works AR10 bolt carrier group is a great choice for multi-caliber use. The carrier is made from case hardened 8620 steel and finished with black nitride (QPQ) for a durable and smooth finish. The high-pressure bolt is MPI and HPT tested to ensure reliable operation. The gas key is properly staked and made from 4130 steel. The cam pin is made from hardened 4340 steel. The bolt is made from case-hardened 9310 steel. The extractor is made from 4340 steel. This BCG fits DPMS style and other AR10 rifles.

Pros:
  • Multi-caliber use
  • Durable and smooth finish
  • MPI and HPT tested
  • Properly staked gas key
  • Made from hardened steel
  • Extractor made from steel
Cons:
  • AR10 rifles only
  • The bolt head can leave brass shavings all over the chamber

 

9# Radian Weapons Enhanced Black Nitride Bolt Carrier Group

Radian Weapons Enhanced Black Nitride Bolt Carrier Group

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Specification

Gun Model: M16, AR-15

Introducing the Radian Weapons Enhanced Black Nitride Bolt Carrier Group. This superbly designed carrier group is engineered to minimize carrier tilt and reduce overall friction for smoother operation and enhanced reliability. The bolt is shot peened to Mil-Spec standards for superior strength and durability, while grade 8 hardware ensures the utmost performance, reliability, and longevity. The sleek, ultra-durable black nitride finish looks great and provides superior protection against wear and tear. Whether you’re shooting at the range or in the field, the Radian Weapons Enhanced Bolt Carrier Group is your ticket to the top-tier performance. Don’t settle for anything less – experience the difference today!

Pros:
  • Reduces carrier tilt
  • Minimizes friction
  • Smooth operation
  • Superior strength and durability
  • Protects against wear and tear
Cons:
  • May be too pricey for some
  • Some may find the sleek black nitride finish to be unappealing

 

10# Aero Precision AR15 5.56 Bolt Carrier Group

Aero Precision AR15 5.56 Bolt Carrier Group

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Specification

Color: Black
Fabric/Material: 8620 Steel
Caliber: 5.56x45mm NATO
Gun Model: AR-15

The Aero Precision AR15 5.56 Bolt Carrier Group is the finest bolt carrier group for your AR15. This high-quality BCG is machined from 8620 steel and features an M16-cut carrier with forwarding assist serrations. It also has a properly staked gas key and a chrome-lined gas key and a firing pin channel. The 5.56 bolt is machined from Carpenter 158 tool steel and is shot-peened for added durability. It’s also HPT tested and MPI marked. Plus, it has a black o-ring insert on the extractor for added reliability. So if you want a high-quality BCG that will give you peace of mind, go with the Aero Precision AR15 5.56 Bolt Carrier Group.

Video review

Pros:
  • Machined from 8620 steel
  • M16-cut carrier with forwarding assist serrations
  • Properly staked gas key
  • Chrome-lined gas key and firing pin channel
  • 5.56 bolt is machined from Carpenter 158 tool steel
  • Shot peened for added durability
  • HPT tested and MPI marked
  • Black o-ring insert on the extractor
Cons:
  • May not be compatible with all AR15s
  • Not be as durable as some others
  • May cause build-up over time

 

11# FosTech Outdoors AR-15 Complete Bolt Carrier Group

FosTech Outdoors AR-15 Complete Bolt Carrier Group

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Specification

Gun Model: AR-15

The FosTech Outdoors AR-15 Complete Bolt Carrier Group is a top quality, standard full-auto M16 cut Nickel Boron Bolt Carrier Group. It has been designed to function perfectly with the Echo AR-II and the Echo Sport. It is made from the highest quality materials, including 9310 Steel for the bolt and 8620 Steel for the carrier, and is built to last. This product is brand new and backed by Fostech’s excellent customer service and support. Order your FosTech Outdoors AR-15 Complete Bolt Carrier Group today!

Pros:
  • Standard full-auto M16 cut Nickel Boron Bolt Carrier Group
  • Perfect for Echo AR-II and Echo Sport
  • Made from the highest quality materials
  • Steel bolt and carrier
Cons:
  • May not be compatible with other ARs
  • May be difficult to install for some
  • Not as durable as some of the higher-priced options

 

12# Stern Defense SD BU9 9mm Bolt Carrier

Stern Defense SD BU9 9mm Bolt Carrier

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Specification

Color: Black
Fabric/Material: Melonite
Caliber: 9mm Luger
Additional Features: Compatible with the JP Silent capture spring, Compatible with the Echo trigger., Compatible with the Law Folding Tactical Stock, Compatible with single stage short reset triggers, Custom 4140 billet extractor providing superior ejection., Constructed from 8620 AISI steel

Whether you’re looking to upgrade your existing 9mm AR or build a new one from scratch, the Stern Defense SD BU9 9mm Bolt Carrier is a great choice. This top-quality bolt carrier group is built with 8620 AISI steel and features a Melonite coating for reduced friction and increased reliability. It’s compatible with Mil-Spec and Glock-pattern upper receivers, as well as Colt SMG and Glock magazines, making it a versatile choice for any build. Installation is quick and easy, so you can get back to shooting in no time. Don’t settle for less than the best – pick up the Stern Defense SD BU9 9mm Bolt Carrier today!

Pros:
  • Made with 8620 AISI steel for durability
  • Melonite coating reduces friction and increases durability
  • Compatible with Mil-Spec and Glock-pattern upper receivers
  • Colt SMG and Glock magazine compatible
  • Quick and easy installation
Cons:
  • Some users have reported reliability issues
  • Not compatible with all AR builds

 

13# JP Enterprises EnhancedBolt 9mm AR Bolt Carrier Group Kit

JP Enterprises EnhancedBolt 9mm AR Bolt Carrier Group Kit

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Specification

Fabric/Material: 416R Stainless Steel
Caliber: 9mm Luger

The JP Enterprises EnhancedBolt 9mm AR Bolt Carrier Group Kit is a top-of-the-line choice for anyone looking for a reliable and accurate bolt carrier group. This kit includes an Enhanced 9mm AR Bolt, combined with a Silent Captured Spring System. With its last-round holt open compatibility with a line of short-stroke Silent Captured Springs, this bolt assembly will provide reliable last-round Lockback with any compatible receiver. The JP Enterprises EnhancedBolt 9mm AR Bolt Carrier Group Kit is designed for optimal function with JP Silent Captured Springs for a heavier operating system that reduces bolt bounce while improving reliability and accuracy. Featuring a tighter firing pin channel to reduce pin wear, and a high-energy tumble process that offers a finer cosmetic finish, the JP Enterprises EnhancedBolt 9mm AR Bolt Carrier Group Kit is the perfect choice for anyone looking for top performance from their bolt carrier group.

Pros:
  • Reduced stroke length for faster firing impulse
  • Silent Captured Spring System
  • Enhanced 9mm AR Bolt
  • Tight firing pin channel
  • High-energy tumble process
Cons:
  • May be too heavy for some ARs
  • Not compatible with all receivers

 

14# TRYBE Defense Milspec Complete 9mm Hybrid Bolt Carrier Group

TRYBE Defense Milspec Complete 9mm Hybrid Bolt Carrier Group

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Specification

Finish: Black Nitride
Fabric/Material: 8620 Steel
Caliber: 9mm Caliber

If you’re looking for the best of the best when it comes to bolt carrier groups, you need to check out the TRYBE Defense Milspec Complete 9mm Hybrid Bolt Carrier Group. This fully assembled BCG is built specifically for use with 9mm AR-15 carbines and is compatible with both Glock and Colt-style lower receivers. Included in this BCG are the bolt, bolt carrier, gas key, firing pin, cam pin, and firing pin retaining pin – everything you need for a top-performing rifle. Each bolt undergoes high-pressure testing (HPT) and magnetic particle inspection (MPI) to ensure it meets or exceeds mil-spec standards. The TRYBE Defense Milspec Complete 9mm Hybrid Bolt Carrier Group is machined from ultra-durable and corrosion-resistant 8620 steel, nitride QPQ-treated, and hardened to mil-spec conditions. This BCG is sure to provide you with years of reliable service and performance. Don’t settle for anything less than the best – trust TRYBE Defense for all your AR-15 needs.

Pros:
  • Fully assembled
  • Compatible with Glock and Colt-style lower receivers
  • High-pressure testing (HPT) and magnetic particle inspection (MPI) performed
  • Machined from ultra-durable and corrosion-resistant 8620 steel
  • Nitride QPQ-treated
  • Hardened to mil-spec conditions
Cons:
  • May be too pricey for some
  • No carrier key screws included
  • The quality control could be better

 

15# JP Enterprises EnhancedBolt 9mm AR Bolt Carrier Group

JP Enterprises EnhancedBolt 9mm AR Bolt Carrier Group

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Specification

Fabric/Material: 416R Stainless Steel
Caliber: 9mm Luger

The JP Enterprises EnhancedBolt 9mm AR Bolt Carrier Group is a high-quality, reliable bolt carrier group that is perfect for use with 9mm JP Silent Captured Springs. This third-generation bolt assembly eliminates the need for a central mass (slug) to function properly, and when combined with Silent Captured Spring, provides a reliable operating system that significantly reduces bolt bounce and improves accuracy.

Pros:
  • Eliminates the need for a central mass (slug) to function properly
  • Provides reliable last-round Lockback
  • Reduces bolt bounce while improving reliability and accuracy
Cons:
  • May not be compatible with all AR receivers
  • Requires a Silent Captured Spring to function properly

 

16# Sons Of Liberty Gun Works Bolt Carrier Group

SONS OF LIBERTY GUN WORKS BOLT CARRIER GROUP

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Specification

Cartridge: 5.56 mm NATO

The Sons of Liberty Gunworks Bolt Carrier Group is a top-of-the-line choice for any AR-15 owner who wants the best possible performance from their rifle. Each Sons of Liberty Gunworks AR-15 Bolt Carrier Group includes components made from several cutting-edge materials. The bolt itself is machined from Carpenter Technology No. 158 steel, which is heat-treated to military specifications, shot-peened, vibratory tumbled, and full-auto test fired in a complete assembly to ensure performance. The carrier itself is machined from AISI 8620 alloy steel and features a full-auto profile.

Video review

Pros:
  • Made from high-quality materials
  • Heat-treated and shot-peened for durability
  • Tested for performance
  • Easy to install
Cons:
  • More expensive than some other options
  • May not be as durable as others

 

17# Cmmg – 308 AR Bolt Carrier Group

CMMG - 308 AR BOLT CARRIER GROUP

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Specification

Cartridge: 308 Winchester

Finish: Matte Black

The CMMG – 308 AR Bolt Carrier Group is the perfect drop-in addition to your AR-style .308 rifle. It’s been machined of 8620 steel for superior durability and features a phosphate finish and chrome-lined interior. The carrier doesn’t have serrations for a forward assist, and the bolt has been machined from 9310 hardened steel with an extractor of hardened S7 tool steel. The gas key has been torqued to spec and properly staked, and the firing pin is machined from stainless steel. The group also includes a cam pin and firing pin retaining pin.

Pros:
  • Machined of 8620 steel for superior durability
  • Phosphate finish and chrome-lined interior
  • The gas key has been torqued to spec and properly staked
  • The firing pin is machined from stainless steel
  • Cam pin and firing pin retaining pin included
Cons:
  • No serrations for a forward assist
  • Often not available

 

18# 2A Armament Bolt Carrier Group Lightweight Adjustable

2A ARMAMENT BOLT CARRIER GROUP LIGHTWEIGHT ADJUSTABLE

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Specification

Cartridge: 223 Remington, 5.56 mm NATO, 300 AAC Blackout

The 2A Armament Bolt Carrier Group Lightweight Adjustable is the perfect choice for those looking to tune their AR-15’s gas system. This carrier provides a drop-in, lightweight solution that eliminates the need for adjustable gas blocks. It is fully adjustable through the port door and does not require the firearm to be broken down for adjustment. The RBC can be tuned to most combinations of buffers, springs, suppressors, and barrel lengths.

Video review

Pros:
  • Eliminates the need for adjustable gas blocks
  • Fully adjustable through the port door
  • Does not require the firearm to be broken down for adjustment
  • Tunable to most combinations of buffers, springs, suppressors, and barrel lengths
Cons:
  • May be too lightweight for some AR-15 combinations
  • Higher cost than others

 

19# Odin works inc. – AR-15 bolt carrier group

ODIN WORKS INC. - AR-15 BOLT CARRIER GROUP

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Specification

Cartridge: 223 Remington, 5.56 mm NATO, 300 AAC Blackout

Finish: Black Nitride

When it comes to building a reliable AR-15, nothing is more important than choosing the right bolt carrier group. And for those who demand the best, there’s only one choice: the ODIN Works AR-15 Bolt Carrier Group. This bolt carrier group is treated with a black-nitride finish that provides a low-friction surface that doesn’t require as much lubricant to run properly. As a result, your AR will run smoother and more reliably, even in the most demanding conditions. The bolt carrier group is also designed for use with traditional AR cartridges that share the 5.56 NATO case head, making it a perfect choice for those who want the ultimate in reliability and performance. Make the smart choice and choose the ODIN Works AR-15 Bolt Carrier Group for your next build.

Pros:
  • AR-15 bolt carrier group is treated with a black-nitride finish for smooth, reliable operation
  • Works with traditional AR cartridges
  • The low-friction surface doesn’t require as much lubricant
  • Rugged steel components
Cons:
  • May not be compatible with AR-10 rifles
  • Not available in left-handed versions
  • Some shooters have reported reliability issues

 

20# Wilson Combat – AR-15 Bolt Carrier Assembly

WILSON COMBAT - AR-15 BOLT CARRIER ASSEMBLY

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Specification

Cartridge: 5.56 mm NATO

Finish: Black

The Wilson Combat – AR-15 Bolt Carrier Assembly is manufactured by some of the finest domestic Mil-Spec contractors in the business. The bolt is precision machined from Carpenter No. 158 steel, shot peened for increased strength, and includes a tool steel extractor and ejector. The extractor is 4140 gun quality, annealed, cold-drawn steel per the Mil-Spec. Parkerized externally and internally chrome lined, the 8620 steel carrier includes a properly machined Mil-Spec gas key that is chrome lined, phosphate, and heat treated per GI specifications. This is one of the best 5.56 AR rifle bolts on the market and is sure to give you the performance you need and expect from a high-quality bolt carrier assembly.

Video review

Pros:
  • Precision machined from Carpenter No. 158 steel
  • Shot peened for increased strength
  • Tool steel extractor and ejector
  • The extractor is 4140 gun quality, annealed, cold drawn steel
  • Parkerized externally and internally chrome lined
  • 8620 steel carrier includes a properly machined Mil-Spec gas key that is chrome lined, phosphate, and heat treated per GI specifications
  • Performance you need and expect from a high-quality bolt carrier assembly
Cons:
  • May wear down over time
  • Not properly machined and may not fit AR rifles correctly
  • May not be available on the market

 

21# Forward Controls Design Llc Bolt Carrier Group

FORWARD CONTROLS DESIGN LLC BOLT CARRIER GROUP

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Specification

Cartridge: 5.56 mm NATO

Finish: Black

Introducing the SBCG Bolt Carrier Group from Forward Controls Design LLC. This modified carrier group is designed for use with slick side uppers and uppers without a forward assist. It features a series of serrations or dimples to aid in closing an out-of-battery bolt on upper receivers without a forward assist. The carrier still has forward assist pawl notches, and so is compatible with forwarding assist equipped uppers. The Secure Staking aspect involves SBCG’s use of Ned Christiansen’s OCKS (Optimized Carrier Key Screws), which when staked properly, offer significant improvement over conventional screws. If you’re looking for a top-quality bolt carrier group that offers improved ergonomics and secure staking, look no further than the SBCG from Forward Controls Design LLC.

Video review

Pros:
  • Shot peened
  • Sprinco 5-Coil heavy-duty extractor spring
  • SBCG carriers are 8620 steel and machined to USGI specifications
  • NP3 coated mil-spec bolt carrier
  • OCKS (optimized carrier key screws)
Cons:
  • May not be compatible with all AR uppers
  • No forward assist pawl notches

 

How To Install a New BCG in an AR-15? βš’

πŸ”° First, make sure that your rifle is unloaded.

πŸ”° Once you’ve confirmed it’s safe to proceed, you’ll need to remove the charging handle from the upper receiver. To do this, grasp the handle firmly and pull it back until it slides out from its slot in the upper receiver. Be careful not to lose the retention pin as you do this.

πŸ”° Next, remove the forward assist plunger by pushing it out with a punch or small screwdriver and set it aside for later use.

πŸ”° Now take out your new BCG and locate its extractor spring and plunger which should already be pre-installed on one side of the bolt carrier group.

πŸ”° Carefully place your BCG into its housing in the upper receiver, ensuring that all parts are lined up correctly before pushing it down into place. If done properly, you should clearly see how everything fits together with no gaps or misalignment between parts.

πŸ”° Next, insert the firing pin into its slot at the rear end of the BCG and make sure it’s pushed all the way through until it seats snugly against its housing at the front end of the bolt carrier group. πŸ”° Once this has been done properly, slide in your cam pin at an angle from outside of the BCG so that both ends sit inside their respective slots.

πŸ”° Now carefully attach your charging handle back onto its rail on top of the bolt carrier group before securing it with its retention pin if necessary – don’t forget to add some lubricant here too! πŸ”° Finally, replace your forward assist plunger by pushing it back into place within its slot in front of where you inserted your firing pin earlier on – again make sure everything fits perfectly before finishing up the installation.

How To Clean And Lubricate Your Bolt Carrier Group for Your AR15?πŸ””

🧷 The first step is to disassemble the BCG by removing the charging handle from its slot in the upper receiver, followed by pulling out the extractor spring and plunger which should already be pre-installed on one side of the bolt carrier group. Make sure not to lose any small pins or components during this process.

🧷 Once you’ve disassembled all necessary components it’s time for cleaning.

  • πŸ’  Start by wiping down all external surfaces with a lint-free cloth dampened with appropriate cleaning solvent; make sure to not submerge these parts into any liquid solution as that could cause corrosion.
  • πŸ’  Using a small brush such as a toothbrush or pipe cleaner can help get into tight spots where dirt may have accumulated more easily.

🧷 Move on to scrubbing down all internal components of the BCG with a quality gun cleaner – take extra care when doing this so as not to damage any delicate parts.

🧷 To finish off, use compressed air to blow away any remaining debris or gunk before allowing everything to dry completely.

🧷 Now it’s time to apply some lubricant which will help keep moving parts working smoothly while preventing dirt and grit from getting stuck inside.

  • πŸ’  Apply a few drops of oil or grease onto each surface that moves – such as around the firing pin hole, along both sides of the extractor spring assembly, and on either side of your firing pin – using either a small brush or cotton swab depending on preference.

🧷 Once everything has been sufficiently lubricated assemble all components back together again starting with placing your bolt atop these items before securing them with two small bolts connected via washers on either side – make sure these are tightened securely so they don’t come loose under heavy use or recoil from firing rounds.

🧷 Finish off by reinserting your charging handle into its slot at one end of your BCG before adding some additional lubricant here too if needed!

Please watch this video to learn more informationπŸ“Ί

 

FAQ 🎯

How to Choose Guide Rails For AR 15 BCG?

πŸ“ First and foremost, you’ll want to consider what kind of material you want your bolt carrier group to be made from. The two common choices are steel and aluminium.

  • Steel is more durable and offers more strength than aluminium, but aluminium is lighter weight and easier to carry around.
  • Ultimately, the choice will depend on how much recoil you expect to experience with your AR 15 and the application you intend to use it for.

πŸ“ Next, consider the coating that the BCG has been treated with.

  • This could range from chrome lining (most common) to nitride or other speciality coatings.
  • Chrome lining provides increased corrosion resistance and lubricity, which helps keep your rifle running smoothly.
  • Nitride coatings offer slightly better wear resistance when compared to chrome lining, but may not provide as much lubricity or corrosion protection as chrome lining does.
  • Some speciality coatings may even go further by reducing friction even further or providing additional features such as self-cleaning capabilities.

πŸ“ Finally, consider what type of firing pin retention system the BCG has; this is usually either a standard cotter pin arrangement or an anti-walk system like an o-ring retention system.

  • The cotter pin arrangement is the most common type and works well if taken care of correctly while anti-walk systems prevent movement of the firing pin within its channel which reduces wear on components over time.

We can assure you that this video will certainly help you πŸ“Ί

How to set the lightweight BCG?

⚑ First, determine what type of BCG you have purchased. There are two main types of BCGs: Full-Auto and Semi-Auto. Both types should come with instructions, but if not, consult the manufacturer’s website or other online resources for installation guides.

⚑ Start by taking apart your rifle in order to access the upper receiver assembly that houses the bolt carrier group. Next, ensure that all moving parts within the upper receiver assembly are clean and free from dirt or debris that could cause malfunctions during use.

⚑ After inspecting the internals of your upper receiver assembly, remove any unnecessary components such as firing pins or extractors before replacing them with the new lightweight BCG parts included in your purchase.

⚑ Before inserting your BCG into the upper receiver assembly, apply a small amount of lubricant to rub points where metal will contact one another – including rails and contact pins – for smoother operation over time.

⚑ Once all rub points are lubricated, carefully insert your new lightweight BCG into its housing on the upper receiver assembly until it slides into place securely without resistance.

⚑ After ensuring that everything is properly seated in place, you can now test fire your rifle with the newly installed lightweight (BCG). Be sure to always wear appropriate eye and hearing protection while testing outdoor firearms and make sure that all bystanders remain at least 10 feet away when firing live ammunition in order to ensure safety for everyone involved!

Just to understand the process, please watch this videoπŸ“Ί

How to Choose Guide Rails For AR 15 BCG?

πŸŸ₯ The first key feature to consider when selecting guide rails is the material used in their construction. Rail systems made from aluminium or steel offer superior strength and durability compared to polymer solutions but tend to be heavier and more expensive than other options. Steel guide rails are generally considered to be the most reliable choice due to their increased strength, while aluminium rails offer a lighter-weight option without sacrificing too much in terms of strength.

πŸŸ₯ Another factor is compatibility with existing components. Ensure that the rail system you choose will fit properly with other components installed in your AR-15 such as hand guards, muzzle devices, and trigger groups.

πŸŸ₯ When it comes to installation of the chosen guide rail system onto your AR-15, it is important to follow all provided instructions carefully and use all necessary tools correctly in order to ensure proper attachment and function. For those who may not have experience installing gun parts themselves, it may be wise to seek out professional assistance if needed in order to ensure safety as well as proper installation and operation of all components involved with the weapon’s assembly process.

I hope this video will help all the beginnersπŸ’»

How to Disassemble/Assemble AR-15 Bolt?

🌐 The first step is to ensure it is unloaded.

🌐 Рlace the gun on a flat surface with the ejection port facing up.

🌐 The next step is to remove the charging handle from the receiver by pressing down on the latch located on either side of the receiver. Pulling back firmly on the charging handle should allow you to remove it.

🌐 Use a punch or similar tool to push out the two retaining pins located at either side of the bolt carrier group: one near where the charging handle was mounted and another near where the ejector spring is located.

🌐 Once these pins are removed, pull back slightly on both sides of the bolt carrier group until it slides out of its place in front of the receiver.

🌐 Remember that when removing these components be sure not to lose any small parts like springs or pins which could lead to damage if they were left loose inside your rifle chamber.

🌐 To begin disassembling each piece, start with unlocking and sliding out the firing pin retainer pin located just above where your charging handle used to sit. This will allow you access to other pieces such as the firing pin cushion plunger, extractor spring assembly, gas rings, cam pin, firing pin, etc our attention back onto reassembling them into their proper place within your gun’s chamber so that they can function correctly upon being fired again.

🌐 Reassembly follows mostly similar steps as removal but is done in reverse order; start by inserting all components into their respective places before locking them down with their respective pins/retainers (firing pin retainer being last).

🌐Be sure to take care when doing so as over-tightening any part may lead to wear and tear or misfires when shooting later down line due to lack of lubrication caused by too much tension/pressure applied onto certain pieces during the reassembly stage itself.

🌐 Double-check all pieces once more and make sure the action locks smoothly before finally returning the upper receiver to the lower receiver portion.

🌐 Finally insert the rear takedown pin followed by pushing forward the charging handle – if everything went according to to go plan then the weapon should now be ready to fire as usual!

Here is the video about the general information regards the process πŸ’»

How To Oil a Bolt Carrier Group?

πŸ” There are several different kinds that work well with BCGs, such as traditional gun oils like CLP (which is a cleaning lubricant preservative), or specific AR-15 oils like Froglube CLP (which is specifically designed for AR-15s).

πŸ” Make sure you clean the BCG before you start the process. This will help remove dirt and other contaminants that could prevent proper lubrication. Once it’s clean and dry, it’s time to start oiling your BCG.

πŸ” Start by applying a few drops of oil to each rail on the bolt carrier group. You should pay special attention to areas where metal comes into contact with metal – like where the bolt slides in and out of the upper receiver – as these areas often experience more wear than other parts of the BCG. Additionally, if your AR has forward assists or dust covers on the upper receivers, apply some additional drops around these components as well.

πŸ” Next, find any pins or springs used in assembly and apply a few additional drops of oil onto them as well. This helps ensure everything remains properly lubricated and functioning correctly when in use.

πŸ” Finally, add a few more drops to any moving parts within the BCG such as firing pins or gas rings – these need a bit more lubrication than other components since they move faster when being fired off rounds. After this step is complete, reassemble all parts onto your AR-15 and give it one final wipe down with a rag to remove any excess oil before using it on range day!

Please watch this video to learn more information πŸ“Ί

What is the difference between Full Auto vs Semi-Auto Bolt Carrier Groups?

🟨 Full Auto Bolt Carrier Groups (BCGs) are designed for fully automatic weapons and have the necessary components to keep up with the high rate of fire that comes along with it. They usually have extra weight that aids in slowing down the cyclic rate which then increases accuracy. Semi-🟨 Auto BCGs, on the other hand, is designed for semi-automatic weapons and operate at a much lower rate of fire than their full-auto counterparts. They don’t require as much extra weight to slow down their cyclic rates like full auto BCGs do, making them lighter and more agile without sacrificing accuracy. This makes them perfect for target shooting or home defence applications where precision is key.

This video provides more information πŸ“Ί

Can you use any BCG in an AR-15?
AR-15s are designed to work with a specific type of bolt carrier group. So, while you can use other types of bolt carrier groups in an AR-15, they may not work as well.
How long will a BCG last?
Most AR bolt carrier groups will last for thousands of rounds provided that they are properly lubricated and maintained. However, some bolt carrier groups may experience wear and tear more quickly than others, so it is important to do your research before making a purchase.

Conclusion πŸ™‚

Choosing the best AR bolt carrier group can be a daunting task. With so many options on the market, it’s hard to know which one will work best for your needs. In this buyer’s guide, we’ve outlined some of the most important considerations you need to make when choosing an AR BCG. We’ve also reviewed some of the top-rated items on the market to help you make an informed decision. So, whether you’re looking for a budget-friendly option or you want the best of the best, we have something for you here. Thanks for reading! 🀩

Tags: #best ar 15 bolt carrier group / #best ar 10 bolt carrier group / #best ar bolt carrier group / #best bolt carrier group ar 15 / #best ar 15 bolt carrier group for the money

Zack Buck

Gunsmith, Hunter, Gentleman Adventurer. Life is too short to shoot mass-produced guns. A once-in-a-lifetime hunt deserves a one-of-a-kind gun. Read about me.
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Cetaum
Cetaum
1 month ago

Hello! This post should have a million likes) Thank you. A little question: what are the coating used for BCG?

Ongiel
Ongiel
Reply to  Cetaum
1 month ago

I currently own two firearms with phosphate coatings and one with a black nitride coating, and I am satisfied with all of them.

Kitore
Kitore
Reply to  Cetaum
1 month ago

I own multiple AR platforms, including an AR10 with a Spikes phosphate-coated bolt carrier group, and various other ARs with bolt carrier groups coated in nitride, tin, nib, or chrome from brands such as Aim Sports, Aero, Brownells, and PSA. I shoot between 6,000 to 10,000 rounds per year, depending on the weather and my work schedule. Among my collection, my favorite to shoot are the ones with tin or nib coating as they are easier to clean and require less frequent cleaning, without the need to scrape the bolt.

Vacedani
Vacedani
Reply to  Cetaum
1 month ago

There are several coating options available for bolt carrier groups, but phosphate is often used as a low-cost default choice. Nitride is another popular option for those seeking a relatively inexpensive “performance” coating, provided they are confident in their ability to maintain it properly. DLC represents a further upgrade in terms of coating quality, while there are many other niche coating options available as well. On the other hand, NiB (Nickel Boron) coating is generally not well-regarded in comparison to other coating options.

Tiger
Tiger
1 month ago

I currently own a Sharps bolt carrier with DLC (Diamond-Like Carbon) and NiB (Nickel Boron) coating. Although the coating did darken slightly due to my hard use, it is still easy to clean and looks great overall. The DLC coating, known for its durability, is holding up very well. This bolt carrier is priced in the range of $185-$200.

Eric
Eric
1 month ago

Personally, I’m a big fan of NiB (Nickel Boron) coating. It not only makes cleaning a breeze but also gives a smooth feel to the touch. While some people like to keep their NiB coating shiny, I actually prefer it when it darkens due to use. In addition, I always add BCM’s extractor spring upgrades to my bolts, as they are simply the best.

Maleran
Maleran
1 month ago

I typically opt for nitride coating because it is an affordable and practical choice that gets the job done.

Sedal
Sedal
1 month ago

Thank you for the detailed post. I think it’s the best one I’ve read for this topic

Blale
Blale
1 month ago

Greetings. There is a lot of items in the article. But what Bolt Carrier Groups are actually worth it?

Xofiscubl
Xofiscubl
Reply to  Blale
1 month ago

Personally, I am a big fan of Aero Precision’s bolt carrier groups. They come with a clean and sleek finish, and perform flawlessly. I have previously tried cheaper bolt carrier groups, but was not impressed with their performance. It’s important to invest in a quality bolt carrier group for your AR, and Aero Precision is a great option that is solid, reliable, and won’t let you down. I also received my order fairly quickly, which was a plus.

Kalelapod
Kalelapod
Reply to  Blale
1 month ago

I was interested in reducing the weight and adding more functionality to my AR, and Fostech helped me achieve that goal. The finish on their bolt carrier group was even shinier than I had expected from the pictures. I also added an adjustable gas block, which was definitely necessary when using a lightweight bolt carrier group. Ever since making these upgrades, my AR has been running smoothly and like a dream.

Hayowirr
Hayowirr
Reply to  Blale
1 month ago

I installed an Angstadt bolt carrier group in my Angstadt upper and lower receiver, along with their buffer spring kit. After firing the first hundred rounds, I am happy to report that I had no malfunctions whatsoever. I am very impressed with the quality of manufacturing from Angstadt, and overall, their bolt carrier group performs great.

Dienin
Dienin
Reply to  Blale
1 month ago

In my experience, you really can’t go wrong with bolt carrier groups from any of the notable brands out there. I’ve had success with PSA, Aero, Toolcraft, ADM, Lantac, Colt, Daniel Defense, Sons of Liberty, Bootleg, Rubber City, Faxon, FN, and Microbest. All of these brands have a solid reputation for producing quality bolt carrier groups, so you can feel confident in your purchase regardless of which one you choose.

Nynnisa
Nynnisa
1 month ago

I appreciate you mentioning the importance of proper lubrication for bolt carrier groups. Personally, I find it helpful to apply a drop of oil on the extractor spring and pin. Additionally, I prefer to use grease on the wear surfaces of the carrier instead of oil. It’s also a good idea to check the gas rings and ensure that their openings are unaligned, although the gun should still run even if they are slightly aligned and leaking gas.

Dwellan
Dwellan
Reply to  Nynnisa
1 month ago

Yeah, agree. I found your information about bolt carrier group lubrication very helpful. I used to apply oil to the entire carrier, but it’s good to know that’s not necessary. Thank you for sharing your knowledge.