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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Out of stock
DD URG DD4 RIIIS 11.5 5.56 BLK/FDE
Daniel Defense
MSRP: $1,595.56$1,412.00The DD4 RIIIS AR15 style Upper Receiver Group is built around a 11.5 inch Cold Hammer Forged Government Profile barrel with a Daniel Defense Flash Suppressor, a GRIP-N-RIP Charging Handle, and their carbine length gas system. It features a 10.5 inch...MSRP: $1,595.56$1,412.00 -
Out of stock
DD BBL ASSY 300BLK 1-8 CHF 10.3
Daniel Defense
MSRP: $392.50$314.00The Daniel Defense 10.3" 300 Blackout S2W(R) barrel is designed with a strength to weight profile (Daniel Defense's Heavy Barrel), a 1:8" twist rate, and a pistol length gas system. Cold Hammer Forging of barrels has been known for decades to produce the...MSRP: $392.50$314.00 -
Out of stock
DD M4 UPPER 300BLK 10.3 BLKT UPPER
Daniel Defense
MSRP: $1,526.63$1,351.00High quality components and precise manufacturing makes Daniel Defense Products 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:...MSRP: $1,526.63$1,351.00 -
Out of stock
DD MK18 URG UPPER 556 10.3 MK18 BLK
Daniel Defense
MSRP: $1,595.56$1,412.00Use what THEY use. The Daniel Defense MK18 Upper Receiver Group features the railed forend Daniel Defense currently provides to USSOCOM and a 10.3" Cold Hammer Forged Barrel. The MK18 Rail Interface System (RIS II) features the Bolt-Up System has been...MSRP: $1,595.56$1,412.00 -
COLT EPR UPPER KIT 5.56 11.5 BLK
Colt
MSRP: $1,142.64$0.00High quality components and precise manufacturing makes Colt Products 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: Colt's...MSRP: $1,142.64$0.00Qty in Cart: 0Quantity:Price:MSRP: $1,142.64$0.00Subtotal: -
Out of stock
COLT EPR UPPER KIT 5.56 14.5 BLK
Colt
MSRP: $1,181.25$881.00High quality components and precise manufacturing makes Colt Products 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: Colt's...MSRP: $1,181.25$881.00 -
Out of stock
COLT M4 UPPER 5.56 11.5 LW BLK
Colt
MSRP: $995.84$720.00High quality components and precise manufacturing makes Colt Products 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: Colt's...MSRP: $995.84$720.00 -
Out of stock
COLT LE6921 UPPER 556NATO 14.5
Colt
MSRP: $923.11$720.00High quality components and precise manufacturing makes Colt Products 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: Colt's...MSRP: $923.11$720.00 -
CMMG BBL BCG KIT 8 9MM 4140CM SBN
CMMG
MSRP: $503.19$0.00CMMG IS A LEADING MANUFACTURER OF AR-15 RIFLES, 22LR AR-15 CONVERSION KITS AND ACCESSORIES.MANUFACTURER: CMMGMPN: 99D517AMODEL: MKGSBarrel Length: 8"Fit: AR RiflesCaliber: 9MMType: BarrelColor: BlackMSRP: $503.19$0.00Qty in Cart: 0Quantity:Price:MSRP: $503.19$0.00Subtotal: -
Out of stock
CMMG BBL BCG KIT 5 9MM 4140CM SBN
CMMG
MSRP: $476.69$358.00The 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$358.00 -
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: -
Out of stock
BLACK RAIN BBL 458SOCOM 10.5
Black Rain Ordnance
MSRP: $243.57$174.00High 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$174.00