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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FAXON 5.56 M16 BCG BLK
Faxon Firearms
MSRP: $186.76$134.00The Faxon 5.56 M16 Bolt Carrier Group, Nitride is a high-performance and reliable upgrade for your AR-15 rifle. This bolt carrier group is designed for optimal performance and is made from top-quality materials, ensuring durability and longevity. The...MSRP: $186.76$134.00 -
FAXON 5.56 9310 BOLT NITRIDE BLK
Faxon Firearms
MSRP: $70.83$52.00Seeing MIL-SPEC as just the starting point, Faxon set out to ensure the best options are available for their demanding customers. Improvements include using 9310 tool steel for the bolt, nitriding the assembly to increase surface hardness, decrease...MSRP: $70.83$52.00 -
FZ 9MM BCG NO HAMMER BLK NITRIDE
FailZero
MSRP: $208.35$149.00This 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$149.00 -
FZ 450 BUSHMASTER NO HAMMER NIB
FailZero
MSRP: $217.81$156.00This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec .450 Bushmaster Upper Receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanents dry lubricity, extreme durability, increase...MSRP: $217.81$156.00 -
FZ 458 SOCOM BCG NO HAMMER NIB
FailZero
MSRP: $217.81$156.00This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec .458 SOCOM Upper Receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability, and increased...MSRP: $217.81$156.00 -
FZ M16/M4 BCG NO HAMMER BLK NIT
FailZero
MSRP: $149.63$107.00High 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$107.00 -
FZ EXO BOLT ASSEMBLY
FailZero
MSRP: $113.65$82.00This fully assembled and NiB coated (5.56/.223) bolt assembly is compatible with most mil spec AR15, M16, M4 Carriers. EXO Nickel Boron provides permanent dry lubricity; increased wear and corrosion resistance. By reducing friction this bolt assembly...MSRP: $113.65$82.00 -
FZ AR15 BOLT CARRIER GROUP
FailZero
MSRP: $179.93$129.00This 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: $179.93$129.00 -
DBST BOLT REBUILD KIT
Doublestar Corp.
MSRP: $37.79$27.00The 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$27.00 -
DBST BOLT CARRIER REBUILD KIT
Doublestar Corp.
MSRP: $62.99$45.00High quality components and precise manufacturing make ACE 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: Doublestar...MSRP: $62.99$45.00 -
CMMG BOLT CARRIER GROUP M16 556
CMMG
MSRP: $212.31$148.00Complete Mil Spec M16 bolt carrier group.MANUFACTURER: CMMGMPN: 55BA419MODEL: 0Type: Bolt Carrier GroupColor: BlackMSRP: $212.31$148.00 -
CMMG BOLT CARRIER GROUP MK3 308
CMMG
MSRP: $305.60$266.00Complete Mk3 bolt carrier group.MANUFACTURER: CMMGMPN: 38BA423MODEL: 0Description: Bolt Carrier GroupType: Bolt Carrier GroupColor: BlackMSRP: $305.60$266.00