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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FZ 9MM BCG NO HAMMER NICKEL BORON
FailZero
MSRP: $265.19$190.00This 9mm AR Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most 9mm AR platform rifles and pistols. The FailZero 9mm BCG is compatible with both lowers designated for Glock or Colt magazines. All critical parts are coated with EXO...MSRP: $265.19$190.00 -
FZ LIGHTWEIGHT BOLT CARRIER GROUP
FailZero
MSRP: $254.19$204.00This 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: $254.19$204.00 -
DD BOLT CARRIER GROUP 5.56
Daniel Defense
MSRP: $285.00$228.00Daniel Defense 5.56 NATO (5.56x45mm & .223 Remington) / 300 Blackout (7.6x35mm) full-auto compatible, M16 Profile, complete bolt carrier group assembly.MANUFACTURER: Daniel DefenseMPN: 04-013-19032MODEL: 556Finish: MatteType: Bolt Carrier GroupColor:...MSRP: $285.00$228.00 -
CMMG BOLT CARRIER GROUP MK3 308
CMMG
MSRP: $305.60$249.00Complete Mk3 bolt carrier group.MANUFACTURER: CMMGMPN: 38BA423MODEL: 0Description: Bolt Carrier GroupType: Bolt Carrier GroupColor: BlackMSRP: $305.60$249.00 -
CMMG BCG AR15 6.5GRN/6MM ARC
CMMG
MSRP: $247.45$177.00This BCG is designed to operate with either 6.5 Grendel or Hornady's new 6mm ARC. Will not work with CMMG MkW platform. It is designed for standard AR variants.MANUFACTURER: CMMGMPN: 64BA44FMODEL: 0Description: Bolt Carrier GroupType: Bolt Carrier...MSRP: $247.45$177.00 -
BOOTLEG FOUR POS ADJ BOLT CAR COMPL
Bootleg
MSRP: $279.93$200.00Complete Bolt carrier group, Machined from S7 Tool Steel, Lithium Isonite Coating, 4 Setting Adjustable Vent System relieves excess gas pressure created from suppressor use, creating longer dwell time and less blowback to the shooter. Gas Adjustment can...MSRP: $279.93$200.00 -
BLACK RAIN 223 BOLT CARRIER GRP LEFT
Black Rain Ordnance
MSRP: $273.70$196.00Black Rain Ordnance, Inc. is a precision firearms manufacturer specializing in modern sporting rifle designs and high quality accessories.MANUFACTURER: Black Rain OrdnanceMPN: BRO-BCG-LHMODEL: 223Description: Biohazard EngravedFinish: Nib-XType: Bolt...MSRP: $273.70$196.00 -
Out of stock
LBE 308 BOLT CARRIER GROUP
LBE Unlimited
MSRP: $268.03$192.00LBE .308 Bolt Carrier Group (DPMS Style). Billet carrier machined from 8620 Steel and Case Hardened.MANUFACTURER: LBE UnlimitedMPN: AR10BCGMODEL: 308Description: Fits DPMS Style .308 UppersType: Bolt Carrier GroupColor: BlackMSRP: $268.03$192.00 -
Out of stock
KAK AR15 BCG M16 556 K-SPEC FDE DE
KAK Industry
MSRP: $269.99$216.00The K-SPEC BCG combines multiple key features focused on increasing the reliability of your AR-15 style firearm no matter if you are running suppressed or unsuppressed, and regardless of conditions. The K-SPEC is a truly plug and play BCG that will...MSRP: $269.99$216.00 -
Out of stock
KAK AR15 BCG M16 556 K-SPEC C&P BLK
KAK Industry
MSRP: $264.53$189.00The K-SPEC Enhanced AR-15 BCG is engineered for peak performance in 5.56 and 300 Blackout rifles, offering unparalleled reliability, whether you're operating with a suppressor or in the cleanest of conditions.MANUFACTURER: KAK IndustryMPN:...MSRP: $264.53$189.00 -
Out of stock
KAK AR15 BCG M16 556 K-SPEC CHR DE
KAK Industry
MSRP: $274.99$220.00The K-SPEC BCG combines multiple key features focused on increasing the reliability of your AR-15 style firearm no matter if you are running suppressed or unsuppressed, and regardless of conditions. The K-SPEC is a truly plug and play BCG that will...MSRP: $274.99$220.00 -
Out of stock
KAK KSPEC AR15 BCG 556 DE CLP BLK
KAK Industry
MSRP: $251.99$180.00The K-SPEC BCG combines multiple key features focused on increasing the reliability of your AR-15 style firearm no matter if you are running suppressed or unsuppressed, and regardless of conditions. The K-SPEC is a truly plug and play BCG that will...MSRP: $251.99$180.00