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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RADIAN UPPER 10.5 223 WYLDE BROWN
Radian Weapons
MSRP: $2,152.59$1,905.00The Radian Upper 10.5 223 Wylde Brown, crafted by Radian Weapons, is designed to enhance the performance and aesthetics of your AR-15 platform. Featuring a 10.5-inch barrel finished in durable Cerakote brown, this upper receiver offers a sleek and...MSRP: $2,152.59$1,905.00 -
RADIAN UPPER 9 300 BLK ODG
Radian Weapons
MSRP: $2,067.84$1,830.00The RADIAN UPPER 9 300 BLK ODG by Radian Weapons is a precision-engineered upper receiver designed for AR-15 platforms. Featuring a 9-inch barrel chambered in 300 Blackout, this upper combines compact size with reliable performance, making it suitable...MSRP: $2,067.84$1,830.00 -
RADIAN UPPER 9 300 BLK GRAY
Radian Weapons
MSRP: $2,067.84$1,830.00The RADIAN UPPER 9 300 BLK GRAY from Radian Weapons is a high-quality upper receiver designed for AR-15 platforms chambered in .300 Blackout. Featuring a 9-inch barrel finished in durable Cerakote gray, this upper combines robust construction with a...MSRP: $2,067.84$1,830.00 -
RADIAN UPPER 9 300 BLK BLACK
Radian Weapons
MSRP: $2,067.84$1,830.00The RADIAN UPPER 9 300 BLK BLACK by Radian Weapons is a precision-engineered upper receiver designed for optimal performance and reliability. Crafted with meticulous attention to detail, this upper features a 9-inch barrel chambered in .300 Blackout,...MSRP: $2,067.84$1,830.00 -
RADIAN UPPER 10.5 223 WYLDE BLACK
Radian Weapons
MSRP: $2,152.59$1,905.00The Radian Upper 10.5 223 Wylde Black from Radian Weapons delivers a precision-engineered upper receiver designed for AR-15 platforms. Featuring a 10.5-inch barrel finished in durable Cerakote black, this upper is built to balance compactness with...MSRP: $2,152.59$1,905.00 -
HK UPPER MR556A4 5.56 11 BLK
HK
MSRP: $2,462.27$2,179.00The HK UPPER MR556A4 5.56 11 BLK is a high-quality upper receiver assembly designed for AR-style rifles. Featuring an 11-inch barrel with an anodized black finish, this upper is engineered to retrofit Mil-Spec 5.56mm rifles with Heckler & Koch's renowned...MSRP: $2,462.27$2,179.00 -
GE SUPER DUTY MOD1 5.56 12.5 URG DDC
Geissele Automatics
MSRP: $1,625.17$1,439.00The Geissele Automatics GE SUPER DUTY MOD1 5.56 12.5 URG DDC is a precision-engineered upper designed for AR-15 platforms. Featuring a 12.5-inch barrel with a 1:7 twist rate, this upper optimizes performance for 5.56 NATO cartridges, balancing accuracy...MSRP: $1,625.17$1,439.00 -
GE SUPER DUTY MOD1 5.56 10.3 URG DDC
Geissele Automatics
MSRP: $1,625.17$1,439.00The Geissele Automatics GE SUPER DUTY MOD1 5.56 10.3 URG DDC is a high-performance AR-15 upper designed to enhance reliability and precision. Featuring a 10.3-inch barrel with a 1:7 twist rate, this upper is engineered to optimize accuracy while...MSRP: $1,625.17$1,439.00 -
DD M4 UPPER 300BLK 10.3 BLKT UPPER
Daniel Defense
MSRP: $1,526.63$1,351.00The Daniel Defense DD M4 Upper 300BLK 10.3 BLKT Upper is a premium component designed to enhance the performance of compatible AR-style rifles. Featuring a 10.3-inch barrel, this upper assembly is engineered for durability and consistent accuracy. The...MSRP: $1,526.63$1,351.00 -
DD MK18 URG UPPER 556 10.3 MK18 BLK
Daniel Defense
MSRP: $1,595.56$1,412.00The Daniel Defense DD MK18 URG Upper features a 10.3-inch cold hammer-forged barrel designed to deliver reliability and precision. This upper receiver group includes the MK18 Rail Interface System (RIS II), known for its robust construction and versatile...MSRP: $1,595.56$1,412.00 -
Out of stock
PWS MK116 MOD 2-M UPPER 16.1 BLK
Primary Weapons Systems
$1,400.00The Primary Weapons Systems MK116 MOD 2-M Upper features a 16.1-inch barrel designed for durability and precision. Crafted with a fully forged upper receiver, this component offers robust construction suitable for a variety of AR-style rifles. The upper...$1,400.00 -
Out of stock
GE URG-I NC 556NATO 14.5 BLK/DDC
Geissele Automatics
$1,479.00The Geissele Automatics URG-I NC 556NATO 14.5 BLK/DDC is a precision-engineered upper receiver designed for AR-15 platforms. Featuring a 14.5-inch barrel with a 1:7 twist rate, this upper is optimized for use with 5.56 NATO ammunition, providing reliable...$1,479.00