Upper Receivers

AR15 ASSEMBLED UPPER RECEIVER - BURNT BRONZE CERAKOTE The AR15 Assembled Upper Receiver comes with the port door and forward assist already installed. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil- spec M16/M4...

Aero Precision - M4E1 Builder Set w/ 9.3" ATLAS S-ONE M-LOK Handguard - EYD Highland Verde This builder set includes the finished pieces you need to assemble your own Highland Verde M4E1 Rifle. The set includes an M4E1 Threaded Upper Receiver, M4E1...

Aero Precision M5 16" .308 CMV Complete Upper Receiver with ATLAS R-ONE Handguard - OD Green Anodized Aero Precision APAR538772M22: The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to...

AR15 ASSEMBLED UPPER RECEIVER - OD CERAKOTE The AR15 Assembled Upper Receiver comes with the port door and forward assist already installed. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil- spec M16/M4 specifications and...

Colt's Manufacturing, SP401491, Upper, 223 Remington, 556NATO, 14.5" Barrel, Matte Black Finish, No BCG Included, Troy Quad Rail, Fixed Front Sight, MA Tech Rear Sight

HARRINGTON & RICHARDSON M16A2 STRIPPED UPPER RECEIVER, GRAY Harrington and Richardson stripped M16A2 Uppers are shipping. These are perfect for your clone builds or a solid base for any upper you want to start. Material is 7075-T6. Finish is...

HARRINGTON & RICHARDSON M16A2 STRIPPED UPPER RECEIVER W/ M4 FEED RAMP, BLACK Harrington and Richardson stripped M16A2 Uppers are shipping. These are perfect for your clone builds or a solid base for any upper you want to start. Material is 7075-T6...

Start your new build with a Luth-AR .223/5.56 A3 Flattop Upper Receiver comes fully assembled with an M4-type feed ramp, 12 position Picatinny accessory rail for mounting scopes or flip-up sights. Shell deflector, forward assist, and ejection port cover...

Sig Sauer SIG MCX Rattler Upper 300 Blackout Includes 5.5" Barrel M-Lok Handguard Side Folding AR Buffer Tube Knuckler Includes Charging Handle Bolt Carrier Sig Duo Matchlite Trigger 1913 Adapter to convert Standard AR lower to accept MCX...

 V Seven M4 AR15 Upper Receiver Assembly Features: MACHINED FROM 7075 T6 FORGING MIL-STD 1913 RAIL FOR MOUNTING OPTICS/ACCESSORIES M4 EXTENDED FEED RAMPS TYPEIII HARDCOAT ANODIZED ADDITIONALLY COATED W/ BLACK KG 2400 SERIES PROVIDES A...

The Billet-AR upper receiver set is 100% machined in the USA and was engineered from the ground up to address structural design weaknesses in standard USGI receivers and enhance overall tolerances. It has a precise bolt raceway for smoother chambering,...

Wilson's Forged Upper Receiver is a M4 Mil-Spec, flat-top upper receiver precision CNC machined from 7075-T6 aluminum forgings for maximum durability and Mil-Spec Type 3 hard coat anodized in rugged black. Whether you are building a match upper or a...