AR15 Parts
Gas & Brass Armory is your trusted source for AR-15 parts in Brandon, FL. Whether you're upgrading your current rifle or building a custom AR from the ground up, we stock high-quality components from top manufacturers like Aero Precision, Magpul, Radian Weapons, BCM, Geissele, and more. Shop complete uppers, stripped lowers, triggers, handguards, buffer kits, barrels, and everything you need for your next AR build. Our expert staff is here to help you build it right the first time.
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FAXON GEN 2 9MM PCC FULL-MASS BCG
Faxon Firearms
MSRP: $212.52$152.00Purpose-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$152.00 -
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 7.62X39 BCG NO HAMMER NIB
FailZero
MSRP: $217.81$156.00This 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$156.00 -
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 AR15 BCG NO HAMMER BLK
FailZero
MSRP: $198.88$143.00This 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: $198.88$143.00 -
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 -
FZ BASIC SEMI KIT BOLT & HAMMER
FailZero
MSRP: $217.81$156.00This 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: $217.81$156.00 -
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