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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CMMG BBL BCG KIT 5 9MM 4140CM SBN
CMMG
MSRP: $476.69$0.00The CMMG 5" 9MM MkGs Barrel and BCG Kit allow you to build a Pistol Caliber Carbine using their patent-pending Radial Delayed Blowback System. Unlike typical direct blowback systems, their RDB uses a bolt that rotates and unlocks, slowing the BCG. This...MSRP: $476.69$0.00Qty in Cart: 0Quantity:Price:MSRP: $476.69$0.00Subtotal: -
CMMG BBL 5.7X28 10.4 PS90
CMMG
MSRP: $308.86$0.00Great choice for your PS90 SBR project. Pair this with a CMMG PS90 Flash hider or thread adapter to complete your SBR.MANUFACTURER: CMMGMPN: 57DF1C7MODEL: 0Type of Barrel: 01:09:00Barrel Length: 10.4"Fit: FN PS90Caliber: 5.7X28MMType: BarrelColor: BlackMSRP: $308.86$0.00Qty in Cart: 0Quantity:Price:MSRP: $308.86$0.00Subtotal: -
CMMG UPPR DSNT 5.7X28MM 6.5 CG
CMMG
MSRP: $1,169.54$0.00The 5.7x28mm personal defense cartridge has found home with the purposefully designed 6.5" DISSENT upper group, all you need is a Mk4/mil-spec AR15 lower receiver or CMMG Mk57 lower receiver. All DISSENT uppers include a lower receiver 1913 picatinny...MSRP: $1,169.54$0.00Qty in Cart: 0Quantity:Price:MSRP: $1,169.54$0.00Subtotal: -
CMMG BBL AND BCG KIT 8 5.7X28MM
CMMG
MSRP: $482.99$0.00The 8" 5.7x28mm Barrel and BCG Kit is perfect for building an AR pistol or SBR in 5.7x28mm using CMMG's patented Radial Delayed Blowback operating system. Unlike typical direct blowback systems, Radial Delayed Blowback not only reduces the weight in your...MSRP: $482.99$0.00Qty in Cart: 0Quantity:Price:MSRP: $482.99$0.00Subtotal: -
CMMG BBL AND BCG KIT 5 5.7X28MM
CMMG
MSRP: $476.69$0.00The 5" 5.7x28mm Barrel and BCG Kit is perfect for building an AR pistol or SBR in 5.7x28mm using CMMG's patented Radial Delayed Blowback operating system. Unlike typical direct blowback systems, Radial Delayed Blowback not only reduces the weight in your...MSRP: $476.69$0.00Qty in Cart: 0Quantity:Price:MSRP: $476.69$0.00Subtotal: -
BLACK RAIN BBL 458SOCOM 10.5
Black Rain Ordnance
MSRP: $243.57$0.00High quality components and precise manufacturing makes Black Rain Ordnance ideal for both new shooters and experienced gun owners. The durability, reliability and excellent build quality will provide years of service you can count on.MANUFACTURER: Black...MSRP: $243.57$0.00Qty in Cart: 0Quantity:Price:MSRP: $243.57$0.00Subtotal: -
BAD 10.5 UPPR WRKHORSE 556 AMBI GRAY
Battle Arms Development
MSRP: $816.48$0.00The WORKHORSE complete upper receiver is purpose-built around the forged WORKHORSE 7075-T6 aircraft-grade aluminum receiver and free-float rail handguard with M-LOK attachment point at 3, 6, and 9 o'clock positions. At 12 o'clock is a full-length...MSRP: $816.48$0.00Qty in Cart: 0Quantity:Price:MSRP: $816.48$0.00Subtotal: -
BAD 10.5 UPR WRKHORSE 556AMBI C BLK
Battle Arms Development
MSRP: $758.98$0.00The WORKHORSE complete upper receiver is purpose-built around the forged WORKHORSE 7075-T6 aircraft-grade aluminum receiver and free-float rail handguard with M-LOK attachment point at 3, 6, and 9 o'clock positions. At 12 o'clock is a full-length...MSRP: $758.98$0.00Qty in Cart: 0Quantity:Price:MSRP: $758.98$0.00Subtotal: -
BAD 10.5 UPPR WRKHORSE 556 AMBI BLK
Battle Arms Development
MSRP: $758.98$0.00The WORKHORSE complete upper receiver is purpose-built around the forged WORKHORSE 7075-T6 aircraft-grade aluminum receiver and free-float rail handguard with M-LOK attachment point at 3, 6, and 9 o'clock positions. At 12 o'clock is a full-length...MSRP: $758.98$0.00Qty in Cart: 0Quantity:Price:MSRP: $758.98$0.00Subtotal: -
BAD 10.5 UPPR AUTH ELITE 556 C GRAY
Battle Arms Development
MSRP: $1,033.85$0.00The heart of the BAD Authority Elite upper receiver is the billet BAD556 7075-T6 aircraft grade aluminum receiver with integral ambidextrous controls and free-float rail handguard with M-LOK attachment points at 3, 6, and 9 o'clock positions. At 12...MSRP: $1,033.85$0.00Qty in Cart: 0Quantity:Price:MSRP: $1,033.85$0.00Subtotal: -
BAD 10.5 UPR AUTH ELITE 556AMBI GRAY
Battle Arms Development
MSRP: $1,033.85$0.00The heart of the BAD Authority Elite upper receiver is the billet BAD556 7075-T6 aircraft grade aluminum receiver with integral ambidextrous controls and free-float rail handguard with M-LOK attachment points at 3, 6, and 9 o'clock positions. At 12...MSRP: $1,033.85$0.00Qty in Cart: 0Quantity:Price:MSRP: $1,033.85$0.00Subtotal: -
BAD 10.5 UPPR AUTH ELITE 556 C BLK
Battle Arms Development
MSRP: $941.85$0.00The heart of the BAD Authority Elite upper receiver is the billet BAD556 7075-T6 aircraft grade aluminum receiver with integral ambidextrous controls and free-float rail handguard with M-LOK attachment points at 3, 6, and 9 o'clock positions. At 12...MSRP: $941.85$0.00Qty in Cart: 0Quantity:Price:MSRP: $941.85$0.00Subtotal: