Complete Upper Receivers

The Radical Firearms 300 Blackout 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,...

The design philosophy behind the Radian Model 1 is simple: use the highest quality raw materials, most precise CNC machining equipment, and best components available to create a weapon that seamlessly blends form and function. Beyond quality and...

The design philosophy behind the Radian Model 1 is simple: use the highest quality raw materials, most precise CNC machining equipment, and best components available to create a weapon that seamlessly blends form and function. Beyond quality and...

The MK1 MOD 1-M line 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 more true to...

The 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...

The 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...

The 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...

The innovative RAPTOR belt-fed upper receiver assembly is designed to interchange with standard AR/M4 type uppers and readily fits any MIL-Spec lower receiver without permanent modification to the host lower, and is rearward compatible to AR15/M16 models...

The FX5500-U features Faxon's 14.5" Pencil Barrel with Integral Slim 3-Port Muzzle Brake which meets the NFA 16" minimum barrel length requirement, 13" Streamline Carbon Fiber Handguard, and Lightweight Bolt Carrier Group. Super light, easy shooting and...

The 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...

Chiappa Firearms is the Italian group specialized in the production of firearms and today one of the most important world leaders in the sector.MANUFACTURER: Chiappa FirearmsMPN: 500.095MODEL: M4-22 G2Barrel Length: 16"Capacity: 28 RoundsFit: AR...

The 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...