• Post category:Bolt Carrier Group
  • Post last modified:September 3, 2022
  • Reading time:28 mins read

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Best 9mm BCG

9mm BCG is the bolt carrier group in a 9mm firearm. It is responsible for chambering rounds and cycling the action. The 9mm BCG is typically made of steel or aluminum and is coated with a finish to protect it from wear and corrosion.

BCG usually consists of a bolt carrier, firing pin, bolt, gas key, firing retaining pin, and cam pin. While firing, gasses move from the barrel up through the gas tube and back into the gas key.

Why do we need a 9mm BCG?

9mm BCGs are necessary because they are designed to work with 9mm ammunition. They are also lighter and shorter than other BCGs, which makes them ideal for smaller firearms.

After installing the 9mm Bolt Carrier Group Assembly onto the compatible receiver, the firearm performance will be updated and the 9mm operating system will be enhanced.

Best Pick

Faxon Firearms Gen Bolt Carrier Group

Faxon Firearms Gen Bolt Carrier Group

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The Gen 2 PCC blow-back BCG is dually compatible with Glock and Colt-Style Lower Receivers, coming with an external M-16 Style Extractor and a strong firing pin.

A ramped bottom fits any common trigger. The cycling is fast and smooth without ejecting, double feeding, or squibs.

Budget Picks

Angstadt Arms Bolt Carrier Group

Angstadt Arms Bolt Carrier Group

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The AR-15 BCG is compatible with both Glock and Colt Style Dedicated 9mm AR-15 Lower Receivers AA09BCGNITimage, featuring removable weight for use with Law Tactical folding stock adapter; well-operated with installed in an Angstadt upper and lower with their buffer spring kit. The Bolt has standard small parts typical of the AR9 platform and is easy to serve.

Spikes Tactical Enhanced ST9BG01 Finish

Spikes Tactical Enhanced ST9BG01 Finish

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The Bolt Carrier Groups are compatible with both Glock and Colt pattern lowers, running flawlessly with any Glock magazine. The BCG features a premium blowback bolt. Zero issues in feeding or extraction.

Top 15 9mm BCG

#1 JP Enterprises EnhancedBolt Bolt Carrier Group Kit

JP Enterprises EnhancedBolt Bolt Carrier Group Kit

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Specification

Fabric/Material: 416R Stainless Steel
Caliber: 9mm Luger
Included Accessories: 3 x Steel Masses, 2 x Tungsten Masses

The enhanced 9mm AR BCG is designed with a Silent Captured Spring System for a heavier, more dependable bolt operating system and a diminished stroke length for a faster firing impulse. The JP Enterprises Bolt Assembly with last round hold open feature operates well with JP short-stroke Silent Captured Springs, reducing bolt bounce and significantly improving accuracy. There are 2 models available in Black or Silver Color with Polished Stainless or QPQ Corrosion Resistant finish correspondingly; both made from 416R Stainless Steel.

Pros
  • Reliable last-round Lock back with any compatible receiver such as our GMR-15

  • With a tighter firing pin channel, the bolt decreases pin wear, delivering longer life and more reliable shooting

  • The high-energy tumble process provides a finer cosmetic coating

  • Comes with three Steel and two Tungsten Masses

  • Dropped in, and doesn’t need any tuning running 147GN hand loads at PF of 135

  • Can shoot as fast as it’s possible to pull the trigger, without issue

  • Feels like there is less muzzle lift

  • Good for firing competition: no cycling issues

  • Super smooth and well-engineered

  • Outstanding quality

  • The best BCG and buffer system

  • The cycling is super smooth

  • The JP silent captured spring for PCC 9mm is phenomenal

  • Very quiet

  • Completely customizable

Cons
  • California’s Proposition 65

  • A bit expensive

#2 Angstadt Arms Bolt Carrier Group

Angstadt Arms 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 AR-15 BCG is manufactured from Steel and Alloy Steel (8620) for Carrier, covered with Black Nitride Finish. The unit is compatible with both Glock and Colt Style Dedicated 9mm AR-15 Lower Receivers AA09BCGNIT image, featuring removable weight for use with Law Tactical folding stock adapter.

Pros
  • High-quality manufacturing

  • Well-operated with installed in an Angstadt upper and lower with their buffer spring kit

  • First hundred rounds and no malfunctions

  • Great performance

  • Fits factory upper perfectly

  • The removable mass allows captured buffer springs to be able to function

  • The Bolt has standard small parts typical of the AR9 platform and is easy to serve

  • Smooth finishing machinery

Cons
  • California’s Proposition 65

#3 Faxon Firearms Gen Bolt Carrier Group

Faxon Firearms Gen Bolt Carrier Group

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Specification

Color: Black
Finish: Salt Bath Nitrided
Fabric/Material: Mil-Spec 8620 Steel
Caliber: 9mm Caliber
Gun Model: AR-15
Weight: 14.9 oz

The Gen 2 PCC blow-back BCGis constructed from Mil-Spec steel (8620) and finished with a Black Salt Bath Nitride. The 9mm Complete BCG is dually compatible with Glock and Colt-Style Lower Receivers.

Pros
  • Appropriate for both weekend plinking and competitive shooting

  • Fully Heat-Treated

  • External M-16 Style Extractor

  • A ramped bottom fits any common trigger

  • Stronger firing pin

  • Cycling is fast and smooth

  • No issues with ejecting, double feeding, or squibs

  • Even without a 9mm ejection port dust cover casings don’t hit left-hand shooters, as they are ejected straight to the side

  • M16 (Full-Auto) paired with Dust Cover, MP5 magazine lower receivers, and JP Enterprises and similar buffer systems

  • The standard firing pin cotter pin allows easy disassembly

  • The mitigated recoil allows extremely prompt repeated shots, all placed within an inch at 75 feet, using flip-up iron sights

  • Operates flawlessly

  • The firing pin holds up greatly after about 200 rounds

  • Easy to clean/dismount

  • No big scarring

Cons
  • California’s Proposition 65

  • The incomplete assembly case: the roll pin wasn’t installed at the BCG rear (it might have fallen out in the poorly-done mail packaging)

#4 Spikes Tactical Enhanced ST9BG01 Finish

Spikes Tactical Enhanced ST9BG01 Finish

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Specification

Finish: Black Nitride
Caliber: 9mm Luger
Additional Features: Compatibility 9mm AR-15

The Enhanced Bolt Carrier Groups are compatible with both Glock and Colt pattern lowers. The BCG is machined with a steel body (8620) with a black Nitride finish, coming with a firing pin spring, Hard Chromed firing pin, and firing pin retaining pin.

Pros
  • Maximum durability even for rigorous use

  • Corrosion- and abrasion-resistant coating

  • A premium blowback bolt

  • Constructed for Semi-Auto AR15 use

  • Hybrid design works with Colt or Glock platform

  • Internal Tungsten weight

  • Inside and out are finished with Black Nitride

  • Laser engraved with Spider logo

  • Convenient cleaning

  • Runs great and looks awesome in the gun

  • Works perfectly with any Glock magazine

  • Zero issues in feeding or extraction

Cons
  • Not yet

#5 Stern Defense SD Bolt Carrier

Stern Defense SD Bolt Carrier

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Specification

Color: Black
Fabric/Material: Melonite
Caliber: 9mm Luger
Additional Features: Echo compatible, Glock cut, Custom 4140 billet extractor providing superior ejection., Constructed from 8620 AISI steel

The PCC bolt fits the echo trigger without adjustment, running with Colt SMG, and Glock magazines. The BCG is crafted from AISI steel (8620) with a Nickel Boron, Melonite hybrid finish. The bolt assembly comes with an installed firing pin, spring, retaining pin, extractor with spring, a proprietary center, and roll.

Pros
  • Fits into Mil-Spec Glock-pattern upper receivers, and standard AR15/M16 charging handles

  • Easy to clean, install and use

  • Solid construction; Reliable Easy to Supplied fully assembled with all sub-parts installed

  • Glock cut

  • Custom 4140 billet extractor ensures superior ejection

  • Works duly with sylvan arms folding stock adapter

  • The NiB finish is a must-have for a dirty suppressed 9mm blowback

  • Smooth action, no jamming

  • The bolt has Allen screws that hold the weight and the extractor

Cons
  • Not yet

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

TRYBE Defense Milspec Complete 9mm Hybrid Bolt Carrier Group

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Specification

Caliber: 9mm Caliber
Gun Model: AR-15
Weight: 15.8 oz
Length: 6.625 in

The Complete Bolt Carrier Group includes the bolt carrier, bolt, gas key, firing, cam pins, and retaining pin for the firing pin. The Mil-Spec AR-15 9mm Hybrid BCG is crafted from Steel: AISI 8620 for Bolt Carrier, AISI 4140 for Gas Key, AISI 9310 for Bolt, S7 Tool for Steel Extractor, AISI 8670 for Firing Pin, Chrome Coated, Black Nitride QPQ-treated (Rockwell Hardness – 78-80 HRc).

Pros
  • Trybe warranty

  • Enhanced Ejector

  • Sturdy and corrosion-resistant material

  • A perfect match for recoil and consistent feeding

  • Fully assembled Mil-Spec BCG with Hardened Fasteners

  • Functionates well with both Coltand Glock style lower receivers

  • Runs smooth as butter

  • High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI)

  • Laser Engraved TRYBE Eagle Logo

  • Gas Key Staked to Mil-Spec Standards

  • Shot Peened

  • Comes oiled

Cons
  • Not drop in with the lower receiver

  • Doesn’t reset the disconnect: it only fires and ejects the first round then a manual reset is needed to fire again

  • Bad quality control: the bolt carrier insert was installed upside down with the ramp towards the middle of the carrier

#7 CMMG, Inc 9mm Barrel and Bolt Carrier Group Kit

CMMG, Inc 9mm Barrel and Bolt Carrier Group Kit

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Specification

Color: Black
Finish: Salt Bath Nitride
Fabric/Material: 4140 Chrome Moly
Caliber: 9mm Luger
Gun Model: CMMG MkG-45 Guard
Threads per Inch: 1/2×28
Barrel Twist Rate: 1-10

The Barrel and BCG Kit are designed for building a Pistol Caliber Carbine (PCC) using the Patent Pending Radial Delayed Blowback System, including a bolt that is forced to rotate and unlock, slowing the BCG. The RDB system makes the BCG and rifle lighter, mitigating felt recoil better than a straight blowback system. The Chrome Moly (4140) Kits, covered with Black Salt Bath Nitride, work flawlessly with the MkGs Lowers, but no warranties of dependable function with other manufacturer’s lowers.

Pros
  • The heavy buffers and springs ensure reliable control

  • Lighter than a typical blowback bolt and seems to stay cleaner

  • All brass ejected cleanly: it cycles all kinds of brass and steel cases, as well as hollow points

  • Comes with a spring behind the bolt and a round cam pin

  • A “shelf” milled into the mag well prevents over-insertion of the magazine, keeping the mag from coming into contact with the bolt

  • Great running of a standard carbine buffer and spring

  • The recoil is light and runs several different brands factory of ammo without any issues

  • 100% function both suppressed and unsuppressed

  • Once tuned, it works well as long as you keep it clean and don’t mess around with the PF too much

  • After installing the 9mm CMMG upper on my AR15 lower (stock spring and 3-oz buffer) and using a standard PMag with a 9mm conversion kit installed, the gun runs great

Cons
  • A little heavy Barrel

  • Compatibility issue with a Gibbz G9 side charging receiver set: after contacting both Gibbz and CMMG before purchase they informed me about a minor modification would be required to the mock gas key, but in fact, it was revealed it would work with only select non-CMMG AR uppers due to the ejector port and ejector/Mag stop

  • Poor quality control and barrel finish: about a 1-inch long noticeable blemish on the barrel right where it sticks out from the hand guard

  • Bolt was self-destructed: it had chunks on the leading edge of the bolt missing after 300 rounds after an RMA the bolt was admitted to be shot, and CMMG promised replacement

  • The gun was jam-o-Matic: it’s impossible to get through a magazine without jamming because of the bolt

  • No guarantee function in an AR upper and lower

#8 Guntec USA Mil-Spec Nitride Bolt Carrier Group

Guntec USA Mil-Spec Nitride Bolt Carrier Group

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Specification

Fabric/Material: Mil-Spec 8620 Steel
Caliber: 9mm Luger
Gun Make: AR Platform
Gun Model: AR-9
Weight: 14.9 oz

The Mil-Spec BCG is constructed with External Extractor for Glock & Colt Style Lower Receivers. The Carrier is made from 8620 Steel, the Bolt is from 9310 Steel. There are 3 models available in Black, Gold, or Rainbow color with QPQ Salt Bath Nitride, TiN Coated, PVD Coated correspondingly. The BCG isn’t ramped.

Pros
  • One-Year Warranty

  • Dust Cover Compatible

  • Fully Heat Treated

  • Holds steady

Cons
  • It jammed or fed improperly a few times the first 60 rounds then got better

#9 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

The Bolt and Carrier Material is 8620 AISI Steel with Black Melonite and Phosphate Chrome Finish. The SD Bolt Carrier is compatible with Mil-Spec and Glock-pattern upper receivers, fitting Glock mags, standard AR15/M16 charging handles, and Colt SMG. The BCG can be paired with the JP Silent captured spring, the Echo trigger, the Law Folding Tactical Stock, the single-stage short-reset triggers, custom 4140 billet extractor, delivering superior ejection.

Pros
  • Melonite coating reduces friction and improves reliability

  • Best Used for 9mm without echo triggers

  • Great compatibility of Glock mags and the Stern Defense bolt carrier for AR9 build

Cons
  • Doesn’t work with echo sport trigger, although it’s advertised it does: the slot is wider to accommodate the hammerlock but it is too long to press the hammer lock forward to even pull the trigger

#10 JP Enterprises EnhancedBolt Bolt Carrier Group Kit

JP Enterprises EnhancedBolt Bolt Carrier Group Kit

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Specification

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

The 9mm bolt assembly is combined with a short-stroke Silent Captured Spring System for a heavier operating system. The AR Stainless Steel (416R) Bolt will provide reliable last-round Lock back with any compatible receiver such as the GMR-15.

Pros
  • A tighter firing pin channel decreases pin wear

  • Reduced stroke length for faster firing impulse

  • Optimal operation with JP Silent Captured Springs, reducing bolt bounce while improving reliability and accuracy

  • Smooth running

  • The high-energy tumble process offers a finer cosmetic finish

  • Great for competition builds

  • The scs buffer dampens the recoil

  • Buffer is tunable to adjust stroke

  • Cycles Fine

Cons
  • California’s Proposition 65

  • Pricey

  • The LRBHO only works on certain uppers with this bolt: it doesn’t function with standard Remington 9mm ranger ammo and Glock mags, there’s no way it will hold open

#11 Dead Foot Arms Modified Cycle System Bolt Carrier Group

Dead Foot Arms Modified Cycle System Bolt Carrier Group

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Specification

Color: Black Anodized
Finish: Nitride
Caliber: 9mm Luger
Additional Features: Left Folder
Weight: 1.99 lb

The Modified Cycle System is designed with MCS Complete 9mm Style Bolt Carrier Group coated in Black Anodized Nitride, Complete Left Side Folding Stock Assembly, plunger, recoil, and buffer spring for fire while folded compatibility on an AR-Platform Rifle.

Pros
  • Made in America, in specialized factories

  • Type III Anodized Aluminum and Tool Steel manufactured

  • Unmatched quality especially for the folding adapter

  • Fire while folded operation

Cons
  • Was sent the wrong item

#12 ODIN Works 9mm Black Nitride Bolt Carrier Group

ODIN Works 9mm Black Nitride Bolt Carrier Group

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Specification

Color: Black
Finish: Nitride
Fabric/Material: Steel
Caliber: 9mm Luger
Gun Model: AR-15

The 9mm BCG works with both Colt and Glock style lowers and mags, featuring the traditional style AR extractor to ensure long and reliable use. The Carrier is crafted from 8620 Steel, Bolt is from Steel.

Pros
  • Fully Heat-Treated

  • External M-16 Style Extractor

  • Much more durable than the 1911 style

  • Full auto and Dust Cover compatible

  • Nicely machined and finished

  • Removable Carrier Weight – Compatible with JP Enterprises and similar buffer systems

Cons
  • California’s Proposition 65

  • Not Compatible with Colt pattern Magwell insert: the Bolt hits feed ramp on Hahn Precision dedicated mag well insert in a billet ADM upper and lower, preventing the upper and lower to meet at the rear takedown pin

#13 CMMG – AR-15 BARREL & BOLT CARRIER GROUP SETS

CMMG - AR-15 BARREL & BOLT CARRIER GROUP SETS

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Specification

Cartridge: 9 mm Luger
Length: 5″
Barrel Weight: 1.4 lbs
Contour: Medium
Finish: Black

The MkGs Barrel and BCG Kit allow building a Pistol Caliber Carbine using the Patent Pending Radial Delayed Blowback System, which differs from typical direct blowback systems by forcing the bolt to rotate and unlock, slowing the BCG. The BCG (4140 Chrome Moly) runs exclusively with the MkG Lowers, and a Mil-spec upper receiver with an enlarged ejection port, with no warranties of well function or reliability with other manufacturers’ receivers. This 9×19 NATO Chambered barrel and BCG need an enlarged ejection port, and a pistol Caliber buffer with its spring for dependable functionality.

Pros
  • Due to the Patent Pending RDB the BCG is lighter and makes the rifle lighter as well with less felt recoil than a straight blowback system

  • Barrels are 5-in or 8-in Medium Taper

  • Finished with Salt Bath Nitride inside and out

Cons
  • Not yet rated

#14 CMMG – MKG GUARD BARREL & BCG KIT

CMMG - MKG GUARD BARREL & BCG KIT

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Specification

Cartridge: 9 mm Luger
Length: 16″
Contour: Medium
Finish: Salt Bath Nitride
Muzzle Threads: 1/2-28
Twist: 1-10

The MkG GUARD Barrel and BCG Kit with a Patent Pending Radial Delayed Blowback (RDB) System improves a Pistol Caliber Carbine performance significantly. The RDB System is more effective than a straight blowback one as a used bolt is forced to rotate and unlock, slowing the BCG and making it lighter. The BCG is made from Chrome Moly (4140) with Salt Bath Nitride Finish. A heavy buffer and enlarged ejection port are recommended for the BCG’s reliable operation.

Pros
  • Light rifle with less felt recoil due to the RDB System

  • Salt Bath Nitride coating inside and out

  • Operates exclusively with the CMMG MkG GUARD Lowers, and a mil-spec upper receiver with an enlarged ejection port

Cons
  • Not yet rated

#15 J P ENTERPRISES CARBINE BOLT CARRIER GROUP SHORT STROKE COMPATIBLE

J P ENTERPRISES CARBINE BOLT CARRIER GROUP SHORT STROKE COMPATIBLE

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Specification

Cartridge: 9 mm Luger
Finish: Stainless Steel

The third generation 9mm bolt assembly doesn’t require a central mass (slug), readily operating with 9mm JP’s line of short-stroke Silent Captured Spring without compromising bolt weight and dependability. The complete JP 9mm operating system is a little heavier than the complete RRA bolt and buffer, some of the bolt mass having been transferred to the SCS in the system. After combining with the JPSCS-9MM, the 9mm operating system will significantly decrease bolt bounce, enhancing accuracy and reliability. This bolt assembly doesn’t work with a law tactical folding stock.

Pros
  • Made in the USA

  • Machined to the same exacting tolerances as JP’s bolt carriers

  • This Stainless-Steel bolt assembly is heavier than the Rock River Arms 9mm bolt with its central mass removed

  • Delivers reliable last-round Lockback in pairs of any receiver such as their GMR-15, and Aero Precision epc9

Cons
  • Not yet rated

FAQ

Are all 9mm BCG the same?
No 9mm BCGs are not all the same. There is a variety of 9mm BCGs on the market and each has its own unique features. It is important to do your research before purchasing a 9mm BCG to ensure you get the best one for your needs.
What is a 9mm BCG?
A 9mm BCG (Bolt Carrier Group) is a critical component of 9mm firearms. It is responsible for housing the bolt and ensuring proper feeding and firing of the ammunition. A 9mm BCG typically contains the following parts:

  • Bolt
  • Carrier
  • Key
  • Firing pin
  • Retaining pin
What are the benefits of a 9mm BCG?
There are several benefits of using a 9mm BCG in your firearm:

  • Improved reliability – designed to improve the reliability of your firearm by providing proper feeding and firing of ammunition.
  • Enhanced performance – can provide enhanced performance by allowing your firearm to fire more accurately and with more power.
  • Improved durability – typically made from high-quality materials that offer increased durability over other types of BCGs.
What are the different types of 9mm BCGs?
There are a few different types of 9mm BCGs on the market:

  • Forged – are made from forged steel and are considered to be the most durable option.
  • Billet – are machined from a solid piece of billet aluminum and offer a lighter weight option.
  • Nitrided – have been treated with a nitriding process that gives them increased durability and corrosion resistance.
What is the best 9mm BCG for my needs?
The best one for your needs will depend on a few factors:

  • The type of firearm you are using – Some BCGs are better suited for certain types of firearms than others.
  • Your budget – 9mm BCGs can range in price from around $100 to over $500.
  • Your shooting style – Some BCGs offer different features that may be better suited for your shooting style.

Conclusion

Check product compatibility carefully before purchasing the BCG to prevent issues with fitting. The reliable BCGs allow for reducing recoil with each shot due to the reciprocating mass decrease during the shooting cycle, as well as staying on target even while prompt firing.

Tags: #best 9mm bcg / #best 9mm bcg glock / #best 9mm ar bcg / #best 9mm ar15 bcg / #best ar 9mm bcg

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