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Are you going to buy a bolt carrier group for your AR-15? If so, you may be wondering which one is the best. In this blog post, we will take a look at the top-rated AR bolt carrier groups and see what makes them stand out from the competition. Keep reading to learn more!

Best AR Bolt Carrier Group

Top 21 Best 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.

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.

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.

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.

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 favorite AR15 rifle!

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.

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.

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.

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.

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.

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

 

FAQ

What should I look for in an AR bolt carrier group?

An AR bolt carrier group (BCG) is one of the most important parts of your AR-15. It is responsible for chambering rounds and driving them into the barrel. As a result, it is important to choose a high-quality BCG that will function reliably and durably.

When selecting an AR BCG, you should consider the following factors:

  1. Material: The best AR BCGs are made from high-quality materials, such as 9310 steel or Carpenter 158 steel.
  2. Manufacturing Process: The best AR BCGs are manufactured using high-quality processes, such as precision CNC machining.
  3. Finish: The best AR BCGs have a quality finish that will resist wear and corrosion.

Can you use any BCG in an AR-15?

AR-15s are designed to work with a specific type of bolt carrier group – the AR-15 bolt carrier group. So, while you can use other types of bolt carrier groups in an AR-15, they may not work as well. In particular, AR-15s may not cycle properly with a non-AR-15 bolt carrier group.

How does AR-15 bolt carrier group work?

The AR-15 bolt carrier group is responsible for chambering a round, extracting and ejecting the spent casing, and loading a fresh cartridge into the firing chamber. It also helps keep the gun’s moving parts in good working order.

What is the best metal for a bolt carrier group?

The best metal for a bolt carrier group is steel. Steel is strong and durable, making it a good option for this part of your AR-15. It also resists corrosion, making it a good choice for humid or wet environments.

Can I use a full auto bolt carrier?

AR bolt carrier groups are available in full-auto and semi-auto variants. Most ARs will function safely and reliably with either type of bolt carrier group. However, if you are unsure which type your AR requires, it is best to consult the manufacturer to be sure.

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 AR bolt carrier groups may experience wear and tear more quickly than others, so it is important to do your research before making a purchase.

What bolt carrier group does the military use?

The military uses the AR-15 bolt carrier group. It is made to be more durable and reliable in order to handle the demands of combat.

Conclusion

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 AR bolt carrier groups 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

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