Upper Receivers

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...

Luth-AR stripped .223 Remington receivers are A3 flattop with M4-type feed ramp, 12 position Picatinny accessory rail for mounting scopes or flip-up sights. Shell deflector, forward assist housing, and ready for an ejection port cover. Precision machined...

The LUTH AR assembled A2 upper receiver features the A2 carry handle style, complete with A2 rear sight (windage and elevation). Features shell deflector, forward assist, and an ejection port cover. Precision machined from a premium-grade 7075 T6...

LBE Unlimited is a leading producer of US Made gun parts and accessories, particularly for the AR-15 platform. Whether you're in the middle of an AR build or you're just looking to upgrade a key component, LBE has you covered with reliable parts and...

The patent pending SMOOTHCAM system features a domed head, low friction cam pin and special upper receiver that offer ultra smooth operation. With its blended cam recess the UAR upper is machined from Billet 7075-T6 certified aluminum and milspec, ...

BA10 Assembled Upper Receiver. Forged from 7075-T6 aluminum, this assembled upper is precision machined to DPMS Gen1 specifications and features M4 feedramps.MANUFACTURER: Ballistic AdvantageMPN: BAPA100091MODEL: BA10Finish: AnodizedFit: AR-10Type:...

AR15 Assembled Upper Receiver. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil-spec M16/M4 specifications and features M4 feedramps.MANUFACTURER: Ballistic AdvantageMPN: BAPA100049MODEL: 0Finish: AnodizedFit: AR-15Type:...

The 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...

The 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...

The 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...

The 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...

The 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...