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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PWS MK116 MOD 2-M UPR 16 762X39 BLK
Primary Weapons Systems
MSRP: $1,399.95$1,300.00The PWS MK1 MOD 2-M line, revamped for 2018, features the PWS long stroke piston system. While the internals remain the same as other PWS lines, the MK1 MOD 2-M offers a variety of features exclusive to this line. Starting with patent pending PicLok...MSRP: $1,399.95$1,300.00 -
LANTAC RECON UPPER 223 WYLDE 16
LanTac USA LLC
MSRP: $1,322.99$1,191.00The LA-SF15 RECON URG (Upper Receiver Group) is built to the highest quality standards and assembled by a skilled team of armorers. Each URG undergoes a shot test at Lantac's facility and includes a lifetime warranty against defects. The LA-SF15 URG...MSRP: $1,322.99$1,191.00 -
GE SUPER DUTY MOD1 5.56 16 URG BLK
Geissele Automatics
$1,286.00Manufactured with confidence and without compromise, the Super Duty MOD1 adds value to the platform while continuing the reputation for excellence. All of these technologies and advancements combine to bring to market a true next-gen upper for the AR-15...$1,286.00 -
FAXON ARAK-21 7.62X39 16 UPPER
Faxon Firearms
MSRP: $999.00$920.00The 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$920.00 -
DD M4V7 LW UPPER 556 16 MLOK BLK
Daniel Defense
MSRP: $1,300.00$1,208.00The Daniel Defense M4 V7 LW Upper Receiver Group is built around a Cold Hammer Forged 16" Lightweight profile barrel-which is two ounces less than a standard V7 barrel-and equipped with a DD improved Flash Suppressor to reduce flash signature. It...MSRP: $1,300.00$1,208.00 -
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 -
COLT EPR UPPER 5.56 16 MLOK BLK
Colt
MSRP: $1,049.00$994.00The 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$994.00 -
CMMG UPPR RSLT MK4 6MM ARC 16.1 BLK
CMMG
MSRP: $899.95$785.00Meet 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$785.00 -
CMMG UPPR RSLT MK4 350LEG 16.1 BLK
CMMG
MSRP: $899.95$777.00CMMG's RESOLUTE lineup is engineered with purpose for those who refuse to compromise on quality. Each RESOLUTE rifle comes with a 16-inch barrel and is designed for balance, accuracy and maneuverability. Whether you're defending your family or looking to...MSRP: $899.95$777.00 -
C.DALY AR 410 UPPER .410 19 5RD
Charles Daly
MSRP: $442.96$356.00The 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$356.00 -
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 -
BAD 16 UPPR WRKHORSE 556 AMBI C BLK
Battle Arms Development
MSRP: $692.98$660.00The 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: $692.98$660.00