BCG
Gas & Brass Armory offers a trusted selection of AR-15 Bolt Carrier Groups (BCGs) for your rifle builds in Brandon, FL. Whether you're looking for a reliable mil-spec BCG or a premium enhanced model, we stock top brands like Aero Precision, BCM, FailZero, and Toolcraft. Choose from phosphate, nitride, or nickel boron finishes, with full-auto and lightweight options available. All BCGs are built to perform under pressure and keep your rifle cycling reliably.
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Out of stock
AERO AR9 9MM BCG BLK NITRIDE
Aero Precision
MSRP: $251.99$179.99The Aero Precision EPC/AR9 Bolt is the core of your EPC build. Machined from 8620 steel and featuring a nitride finish, fracture resistant grade 23 titanium pin, and 4140 steel extractor, the EPC bolt assembly is precision machined from the ground up to...MSRP: $251.99$179.99 -
LBE AR15 FIRING PIN
LBE Unlimited
MSRP: $11.04$6.69The LBE AR-15 Firing Pin is made in the USA.MANUFACTURER: LBE UnlimitedMPN: ARFPNMODEL: AR-15Type: Firing PinColor: BlackMSRP: $11.04$6.69 -
FZ 9MM BCG NO HAMMER BLK NITRIDE
FailZero
MSRP: $208.35$148.82This 9mm Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most 9mm AR platform rifles and pistols. The FailZero Black Nitride 9mm BCG is compatible with both lowers designated for Glock or Colt magazines. All critical parts are...MSRP: $208.35$148.82 -
FZ M16/M4 BCG NO HAMMER MATTE
FailZero
MSRP: $198.88$142.06This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec M16, M4 or AR15 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and...MSRP: $198.88$142.06 -
FZ M16/M4 BCG NO HAMMER BLK NIT
FailZero
MSRP: $149.63$106.88High quality components and precise manufacturing make FailZero parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on.MANUFACTURER:...MSRP: $149.63$106.88 -
FZ AR15 BOLT CARRIER GROUP
FailZero
MSRP: $179.93$128.52This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec AR15 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases both...MSRP: $179.93$128.52 -
DBST BOLT REBUILD KIT
Doublestar Corp.
MSRP: $37.79$26.99The bolt rebuild kit provides everything you need to rebuild your AR15 bolt.MANUFACTURER: Doublestar Corp.MPN: AR790MODEL: 0Description: Extractor, Extractor Spring/Pad/Pin, 3 Gas Rings, O-ringType: Bolt Carrier Group PartColor: BlackMSRP: $37.79$26.99 -
CMMG BOLT CARRIER GROUP M16 556
CMMG
MSRP: $212.31$151.65Complete Mil Spec M16 bolt carrier group.MANUFACTURER: CMMGMPN: 55BA419MODEL: 0Type: Bolt Carrier GroupColor: BlackMSRP: $212.31$151.65 -
BAD M4/M16 STANDARD BCG
Battle Arms Development
MSRP: $189.00$135.00The best just got better! From the inventors of the very first fully modular, patented, ambidextrous safety selector for the AR-15 platform, Battle Arms Development is raising the bar on reliability and compatibility of hard-use MSR components...MSRP: $189.00$135.00 -
ANGSTADT AR15 BCG 45ACP BLK
Angstadt Arms
MSRP: $222.60$159.00This 45 ACP bolt carrier group is compatible with GLOCK 45 ACP AR-15 (AR-45) builds. It features removable weight for use with the Law Tactical folding stock adapter.MANUFACTURER: Angstadt ArmsMPN: AA45BCGNITMODEL: 0Description: Bolt Carrier GroupType:...MSRP: $222.60$159.00 -
Out of stock
AERO AR10 308 BCG W/LOGO
Aero Precision
MSRP: $293.74$234.99Aero Precision's .308 / 7.62 Bolt Carrier Group is the perfect firing mechanism for your big-bore rifle build. This high quality BCG features a Black Nitride finish, is MPI/HPT and now includes a laser engraved Aero Precision 'A' logoMANUFACTURER: Aero...MSRP: $293.74$234.99 -
CMMG M16/AR FIRING PIN SILVER
CMMG
MSRP: $15.18$9.20Since 2002 CMMG has been the leading manufacturer of AR-15 rifles, AR-10 rifles, and trailblazing AR technologies. CMMG offers premium AR-15 and AR-10 rifles, parts, and accessories.MANUFACTURER: CMMGMPN: 55BA41CMODEL: Firing PinColor: SilverMSRP: $15.18$9.20