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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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 -
FZ M16/M4 BOLT CARRIER GROUP
FailZero
MSRP: $217.81$156.00This 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: $217.81$156.00 -
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 -
FZ 6.5GREN BCG NO HAMMER NIB
FailZero
MSRP: $217.81$156.00This 6.5 Grendel Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most Mil-Spec upper receivers chambered in 6.5 Grendel (Type 2). All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity,...MSRP: $217.81$156.00 -
FZ M16 BOLT CARRIER GROUP
FailZero
MSRP: $179.93$129.00This 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: $179.93$129.00 -
FZ EXO FIRING PIN
FailZero
MSRP: $18.78$12.00This EXO Nickel Boron coated firing pin provides a permanently lubricious surface for extreme durability and increased wear and corrosion resistance.MANUFACTURER: FailZeroMPN: EXO-FIRINGPIN01MODEL: 0Description: Firing PinType: Firing PinMSRP: $18.78$12.00 -
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 -
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 M16 556
CMMG
MSRP: $212.31$152.00Complete Mil Spec M16 bolt carrier group.MANUFACTURER: CMMGMPN: 55BA419MODEL: 0Type: Bolt Carrier GroupColor: BlackMSRP: $212.31$152.00 -
CMMG BOLT CARRIER GROUP MK3 308
CMMG
MSRP: $305.60$245.00Complete Mk3 bolt carrier group.MANUFACTURER: CMMGMPN: 38BA423MODEL: 0Description: Bolt Carrier GroupType: Bolt Carrier GroupColor: BlackMSRP: $305.60$245.00