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
RRA CMPLT CAR A4 UPR 350LGD 16 10RD
Rock River Arms
MSRP: $740.00$685.00Rock River Arms A4 Carbine upper comes chambered in .350 Legend with a 16" chrome moly 1/16 twist barrel. Additionally this upper includes a RRA 13" M-Lok compatible lightweight free float rail and a RRA Operator Brake (1/2-36 thread). This is a complete...MSRP: $740.00$685.00 -
Out of stock
RRA CMPTL RRAGE 3G UPR 5.56NATO 16
Rock River Arms
MSRP: $540.00$500.00Rock River Arms RRAGE 3G A4 carbine upper comes chambered in 5.56mm NATO. This extruded aluminum upper receiver comes with a port door and no forward assist. Additionally, this upper is equipped with a RRA 15" RRAGE 3G M-Lok compatible handguard, a 16"...MSRP: $540.00$500.00 -
Out of stock
LUTH AR 16 LTWT BBL COMP UPPER 223
Luth-AR
MSRP: $439.95$414.00The Luth-AR 16" Lightweight Complete Upper Barrel Assembly Starts with a 16", 223 Remington Lightweight barrel made from 4140 Chrome Molly with a 1-9" twist mated to a A3 Flattop receiver which includes a bolt carrier, charging handle, forward assist and...MSRP: $439.95$414.00 -
Out of stock
LUTH AR 24 BULL BBL COMP UPPER 223
Luth-AR
MSRP: $514.95$485.00The Luth-AR 24" Fluted Bull Barrel Complete Upper Barrel Assembly Starts with a 24", .223 caliber fluted bull barrel made from 416 SST with a 1-9" twist mated to a A3 Flattop receiver which includes a bolt carrier, charging handle, forward assist and...MSRP: $514.95$485.00 -
Out of stock
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 -
Out of stock
BAD 16 UPPR AUTH ELITE 556 AMBI BLK
Battle Arms Development
MSRP: $865.20$824.00The heart of the BAD Authority Elite upper receiver is the billet BAD556 7075-T6 aircraft grade aluminum receiver with integral ambidextrous controls and free-float rail handguard with M-LOK attachment points at 3, 6, and 9 o'clock positions. At 12...MSRP: $865.20$824.00 -
Out of stock
AERO EPC-9-T UPPER 9MM 16 FDE
Aero Precision
MSRP: $630.00$565.00This EPC-9 Complete Upper Receiver comes standard with the ATLAS S-ONE Handguard. The S-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. The...MSRP: $630.00$565.00 -
Out of stock
AERO EPC-9-T UPPER 9MM 16 BLK
Aero Precision
MSRP: $590.00$530.00This EPC-9 Complete Upper Receiver comes standard with the ATLAS S-ONE Handguard. The S-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. The...MSRP: $590.00$530.00 -
Out of stock
AERO M4E1-T UPPER 308WIN 16 FDE
Aero Precision
MSRP: $820.00$740.00The M5 308 come with the S-ONE line of handguards which is designed with size and weight in mind, providing the perfect addition to your lightweight build. The proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining...MSRP: $820.00$740.00 -
Out of stock
AERO M5 UPPER 308WIN 16 BLK
Aero Precision
MSRP: $780.00$700.00The M5 308 come with the S-ONE line of handguards which is designed with size and weight in mind, providing the perfect addition to your lightweight build. The proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining...MSRP: $780.00$700.00 -
Out of stock
AERO CMPLT UPPER 5.56 16 MOE BLK
Aero Precision
MSRP: $460.00$415.00This AR15 Complete Upper features a 16" 5.56 MId-Length Barrel with Pinned FSB and Magpul MOE Handguard.MANUFACTURER: Aero PrecisionMPN: APAR502505M65MODEL: AR-15 Complete UpperType of Barrel: 01:07:00Barrel Length: 16"Finish: AnodizedFit: AR-15Caliber:...MSRP: $460.00$415.00 -
Out of stock
AERO CMPLT UPPER 5.56 16 MOE FDE
Aero Precision
MSRP: $460.00$415.00This AR15 Complete Upper features a 16" 5.56 MId-Length Barrel with Pinned FSB and Magpul MOE Handguard.MANUFACTURER: Aero PrecisionMPN: APAR502506M65MODEL: AR-15 Complete UpperType of Barrel: 01:07:00Barrel Length: 16"Finish: AnodizedFit: AR-15Caliber:...MSRP: $460.00$415.00