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Table of Contents
- Why do we need a 9mm BCG?
- Best Pick
- Budget Picks
- Top 15 9mm BCG
- #1 JP Enterprises EnhancedBolt Bolt Carrier Group Kit
- #2 Angstadt Arms Bolt Carrier Group
- #3 Faxon Firearms Gen Bolt Carrier Group
- #4 Spikes Tactical Enhanced ST9BG01 Finish
- #5 Stern Defense SD Bolt Carrier
- #6 TRYBE Defense Milspec Complete 9mm Hybrid Bolt Carrier Group
- #7 CMMG, Inc 9mm Barrel and Bolt Carrier Group Kit
- #8 Guntec USA Mil-Spec Nitride Bolt Carrier Group
- #9 Stern Defense SD BU9 9mm Bolt Carrier
- #10 JP Enterprises EnhancedBolt Bolt Carrier Group Kit
- #11 Dead Foot Arms Modified Cycle System Bolt Carrier Group
- #12 ODIN Works 9mm Black Nitride Bolt Carrier Group
- #13 CMMG – AR-15 BARREL & BOLT CARRIER GROUP SETS
- #14 CMMG – MKG GUARD BARREL & BCG KIT
- #15 J P ENTERPRISES CARBINE BOLT CARRIER GROUP SHORT STROKE COMPATIBLE
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.
Faxon Firearms Gen Bolt Carrier Group
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.
Angstadt Arms Bolt Carrier Group
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
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
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.
#2 Angstadt Arms Bolt Carrier Group
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.
#3 Faxon Firearms Gen Bolt Carrier Group
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.
#4 Spikes Tactical Enhanced ST9BG01 Finish
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.
#5 Stern Defense SD Bolt Carrier
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.
#6 TRYBE Defense Milspec Complete 9mm Hybrid Bolt Carrier Group
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).
#7 CMMG, Inc 9mm Barrel and Bolt Carrier Group Kit
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.
#8 Guntec USA Mil-Spec Nitride Bolt Carrier Group
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.
#9 Stern Defense SD BU9 9mm Bolt Carrier
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.
#10 JP Enterprises EnhancedBolt Bolt Carrier Group Kit
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.
#11 Dead Foot Arms Modified Cycle System Bolt Carrier Group
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.
#12 ODIN Works 9mm Black Nitride Bolt Carrier Group
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.
#13 CMMG – AR-15 BARREL & BOLT CARRIER GROUP SETS
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.
#14 CMMG – MKG GUARD BARREL & BCG KIT
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.
#15 J P ENTERPRISES CARBINE BOLT CARRIER GROUP SHORT STROKE COMPATIBLE
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.
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.
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