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
ROSCO 556NATO/300BLK BCG PHOS BLK
Rosco Manufacturing
MSRP: $196.88$140.63These 5.56 / 300 BLK Bolt Carrier Groups are Phosphate Coated with Chrome Lined Gas Key & Bolt Channel, Full-Auto rated, properly staked, and the bolts are Matched to the barrel. Their Rosco Phosphate Bolt Carrier Groups are designed to meet the...MSRP: $196.88$140.63 -
Out of stock
PHASE5 BOLT CARRIER GROUP M16 BLK
Phase 5 Weapon Systems
MSRP: $210.00$150.00Phase 5's Mil-spec M16/M4 bolt carrier features a heat treated and chrome lined inner with a black phosphate coating. The complete bolt carrier group includes cam pin, firing pin, gas key, and bolt. All bolts are HPT/MPI tested.MANUFACTURER: Phase 5...MSRP: $210.00$150.00 -
Out of stock
LBE 556 BOLT CARRIER GROUP NIB
LBE Unlimited
MSRP: $176.69$126.21The LBE Nickel Boron Complete BCG includes the firing pin, retaining pin, cam pin, extractor and bolt gas rings. Made in the USA.MANUFACTURER: LBE UnlimitedMPN: M16BCG-NIBMODEL: 556Finish: Nickel BoronType: Bolt Carrier GroupColor: SilverMSRP: $176.69$126.21 -
Out of stock
KAK K-SPEC ENH AR BOLT 556/300BLK PH
KAK Industry
MSRP: $113.39$80.99The K-SPEC dual ejector system uses Mil-Spec ejectors and springs that require no proprietary parts. Ejector holes are centered on the lugs to avoid any reduction in strength of the bolt. The dual ejector system increases the ejection reliability and...MSRP: $113.39$80.99 -
Out of stock
KAK AR15 BCG M16 556 CLP C158 BLK
KAK Industry
MSRP: $176.33$125.95Phosphate coating and chrome lining-provides a BCG with excellent protection against wear and corrosion, making it a popular choice for those seeking reliability and longevity in their firearms. The phosphate coating provides an initial layer of...MSRP: $176.33$125.95 -
Out of stock
FAXON GEN 2 9MM PCC FULL-MASS BCG
Faxon Firearms
MSRP: $212.52$151.80Purpose-built for 9mm AR-15 pistol caliber carbines, their Generation 2 PCC blow-back carriers keep the features of their well-loved first BCG with modern improvements. They maintain the dual COLT/GLOCK compatible geometry, user-removable weight and...MSRP: $212.52$151.80 -
FZ 7.62X39 BCG NO HAMMER NIB
FailZero
MSRP: $217.81$155.58This 7.62x39 Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil-spec upper receivers chambered in 7.62x39. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme...MSRP: $217.81$155.58 -
Out of stock
FZ 6.8SPC BCG NO HAMMER NIB
FailZero
MSRP: $217.81$155.58This 6.8 SPC Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most Mil-Spec upper receivers chambered in 6.8 SPC. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme...MSRP: $217.81$155.58 -
FZ 458 SOCOM BCG NO HAMMER NIB
FailZero
MSRP: $217.81$155.58This 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$155.58 -
Out of stock
FZ AR15 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 AR15 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity, extreme durability and increases both...MSRP: $198.88$142.06 -
Out of stock
FZ AR15 BCG NO HAMMER BLK
FailZero
MSRP: $198.88$142.06This 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: $198.88$142.06 -
FZ EXO BOLT ASSEMBLY
FailZero
MSRP: $113.65$81.18This 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$81.18