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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FIGHT RAPTOR UPR 556 MLOK 16.25
FightLite
MSRP: $4,999.99$0.00The innovative RAPTOR belt-fed upper receiver assembly is designed to interchange with standard AR/M4 type uppers and readily fits any MIL-Spec lower receiver without permanent modification to the host lower, and is rearward compatible to AR15/M16 models...MSRP: $4,999.99$0.00Qty in Cart: 0Quantity:Price:MSRP: $4,999.99$0.00Subtotal: -
FAXON ION ULTRALT 16 556NATO UPPER
Faxon Firearms
MSRP: $1,099.00$0.00The FX5500-U features Faxon's 14.5" Pencil Barrel with Integral Slim 3-Port Muzzle Brake which meets the NFA 16" minimum barrel length requirement, 13" Streamline Carbon Fiber Handguard, and Lightweight Bolt Carrier Group. Super light, easy shooting and...MSRP: $1,099.00$0.00Qty in Cart: 0Quantity:Price:MSRP: $1,099.00$0.00Subtotal: -
FAXON ARAK-21 7.62X39 16 UPPER
Faxon Firearms
MSRP: $999.00$0.00The ARAK-21 is a gas piston actuated, complete upper receiver assembly designed to seamlessly interface with the standard AR-15 platform. The total extent of the interface is simply the take down pin, and the pivot pin. The new ARAK-21 upper receiver...MSRP: $999.00$0.00Qty in Cart: 0Quantity:Price:MSRP: $999.00$0.00Subtotal: -
FAXON ARAK-21 556NATO 16 UPPER
Faxon Firearms
MSRP: $999.00$0.00The ARAK-21 is a gas piston actuated, complete upper receiver assembly designed to seamlessly interface with the standard AR-15 platform. The total extent of the interface is simply the take down pin, and the pivot pin. The new ARAK-21 upper receiver...MSRP: $999.00$0.00Qty in Cart: 0Quantity:Price:MSRP: $999.00$0.00Subtotal: -
Out of stock
DD M4A1 FSP UPR RCVR 14.5 PW 556 FDE
Daniel Defense
MSRP: $1,619.00$1,506.00This Daniel Defense M4A1 FSP AR15 style Upper Receiver Group was built for customers wanting a firearm inspired by USSOCOM SOPMOD Block II. This upper features the M4A1 FSP RIS II picatinny quad rail in Flat Dark Earth, a 14.5" M4 profile barrel,...MSRP: $1,619.00$1,506.00 -
Out of stock
DD M4V7 UPPER 556 16 MLOK BLK
Daniel Defense
MSRP: $1,300.00$1,208.00The Daniel Defense M4 V7 Upper Receiver Group is built around a Cold Hammer Forged 16" Government profile barrel and equipped with a DD improved Flash Suppressor to reduce flash signature. It features a mid-length gas system for smooth, reliable cycling...MSRP: $1,300.00$1,208.00 -
Out of stock
DD M4A1 UPPER URG 14.5 PB 556 FDE
Daniel Defense
MSRP: $1,612.00$1,499.00The Daniel Defense M4A1 Upper Receiver Group features the M4A1 Rail Interface System (RIS II), which has been in use by US Special Operations Command (SOCOM) for the SOPMOD II Weapons System since 2005. This two-piece, free-floating rail system allows...MSRP: $1,612.00$1,499.00 -
COLT EPR UPPER 5.56 16 MLOK BLK
Colt
MSRP: $1,049.00$0.00The durability, reliability and excellent build quality of Colt uppers will provide years of service you can count on.MANUFACTURER: Colt's ManufacturingMPN: LE6920EPR-CKMODEL: 0Barrel Length: 16"Description: M-LOKFinish: MatteCaliber: 223 RemingtonType:...MSRP: $1,049.00$0.00Qty in Cart: 0Quantity:Price:MSRP: $1,049.00$0.00Subtotal: -
Out of stock
CMMG UPPR RSLT MK4 6MM ARC 16.1 BLK
CMMG
MSRP: $899.95$884.00Meet CMMG's newest long-range offering. Chambered in Hornady's new 6mm ARC (Advanced Rifle Cartridge), the CMMG's RESOLUTE upper receiver group allows you to pair this exciting caliber with your existing AR15 lower for superior function and accuracy at...MSRP: $899.95$884.00 -
Out of stock
CHIAPPA M4-22 G2 UPPR 22LR 16 28RD
Chiappa Firearms
MSRP: $368.89$297.00Chiappa Firearms is the Italian group specialized in the production of firearms and today one of the most important world leaders in the sector.MANUFACTURER: Chiappa FirearmsMPN: 500.095MODEL: M4-22 G2Barrel Length: 16"Capacity: 28 RoundsFit: AR...MSRP: $368.89$297.00 -
C.DALY AR 410 UPPER .410 19 5RD
Charles Daly
MSRP: $442.96$0.00The Charles Daly AR .410 Upper allows any AR-15 to be converted to a .410 shotgun. The CD .410 Upper features a 19in barrel, chambered in 2.5in .410 bore. It has front and rear flip up sights, picatinny quad rail forend and comes with a 5 round magazine...MSRP: $442.96$0.00Qty in Cart: 0Quantity:Price:MSRP: $442.96$0.00Subtotal: -
Out of stock
BLACK RAIN UPPER 458SOCOM 16 BLK
Black Rain Ordnance
MSRP: $999.00$919.00Black Rain Ordnance, Inc. is a precision rearms manufacturer specializing in the modern sporting rifle design. Founded in 2009 with a benchmark to only manufacture weapons we would personally be proud to own and operate. They've sought out the best...MSRP: $999.00$919.00