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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AERO M5 AR10 ASSEMBLED UPPER ODG
Aero Precision
MSRP: $180.00$154.99The M5 .308 Assembled Upper Receiver comes with both the port door and forward assist hardware preinstalled. Forged from 7075-T6 aluminum, this assembled upper is precision machined to accept standard .308 components and is the perfect upper for your big...MSRP: $180.00$154.99 -
AERO M4E1 ASSEMBLED UPPER ODG
Aero Precision
MSRP: $175.00$159.99The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as their M4E1 Enhanced Upper Receiver but is threaded to...MSRP: $175.00$159.99 -
Out of stock
AERO EPC-9 ASSEMBLED UPPER FDE
Aero Precision
MSRP: $205.00$184.99The EPC-9 upper receiver is the perfect addition to any AR9 build. Including a last round bolt hold open mechanism and compatible with most standard AR15 barrel nut and handguard combinations this upper receiver will help take your pistol caliber build...MSRP: $205.00$184.99 -
Out of stock
AERO EPC-9 ASSEMBLED UPPER BLACK
Aero Precision
MSRP: $185.00$164.99The EPC-9 upper receiver is the perfect addition to any AR9 build. Including a last round bolt hold open mechanism and compatible with most standard AR15 barrel nut and handguard combinations this upper receiver will help take your pistol caliber build...MSRP: $185.00$164.99 -
Out of stock
AERO AR15 STRIPPED UPPER FDE
Aero Precision
MSRP: $135.00$119.99Manufacturing a great receiver isn't just about what the end product looks like. It's about what it feels like, how it works, how it handles and performs. Aero Precision products have been recognized across the country by members of the military and law...MSRP: $135.00$119.99 -
AERO M4E1 ASSEMBLED UPPER BLACK
Aero Precision
MSRP: $175.00$159.99The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to...MSRP: $175.00$159.99 -
Out of stock
AERO AR15 ASSEMBLED UPPER FDE
Aero Precision
MSRP: $160.00$144.99Manufacturing a great receiver isn't just about what the end product looks like. It's about what it feels like, how it works, how it handles and performs. Aero Precision products have been recognized across the country by members of the military and law...MSRP: $160.00$144.99 -
AERO AR15 STRIPPED UPPER BLACK
Aero Precision
MSRP: $115.00$104.99Manufacturing a great receiver isn't just about what the end product looks like. It's about what it feels like, how it works, how it handles and performs. Aero Precision products have been recognized across the country by members of the military and law...MSRP: $115.00$104.99 -
RRA CMPLT CAR A4 UPR 458 SOCOM 16
Rock River Arms
MSRP: $790.00$732.44Rock River Arms complete Tactical Carbine upper is an A4 upper chambered in .458 SOCOM with a 16" chrome moly bull barrel and 1:14 twist. Additionally the upper comes with a complete bolt carrier group, charging handle assembly, 15" RRA lightweight M-Lok...MSRP: $790.00$732.44 -
Out of stock
RADICAL UPPR 6.5GRNDL 16 1-9 MLOK
Radical Firearms
MSRP: $669.95$609.47The Radical Firearms 6.5 Grendel upper is perfect for the novice or advanced shooter wanting to finish out that build and hit the range. No matter what your style of shooting is, Radical Firearms has you covered.MANUFACTURER: Radical FirearmsMPN:...MSRP: $669.95$609.47 -
Out of stock
RADICAL UPPR 556 16 1-7 MLOK BLK
Radical Firearms
MSRP: $474.95$308.40The Radical Firearms 5.56mm upper is a complete MIL-STD upper ready to drop on any MIL-STD lower Receiver. Perfect for the novice or advanced shooter wanting to finish out that build and hit the range. No matter what your style of shooting is, Radical...MSRP: $474.95$308.40 -
Out of stock
PWS MK116 MOD 1-M UPR 16 762X39 BLK
Primary Weapons Systems
MSRP: $1,129.95$1,049.95The MK1 MOD 1-M line, revamped for 2018, features the PWS long stroke piston system. Internally, this line offers the tried and true system that PWS owners have grown to know and love. Featuring a free-float MLOK handguard, forward assist controls, and a...MSRP: $1,129.95$1,049.95