Shop 4,464 Deals on Upper Receivers

FM Products FM-45 AR Forward Charging Upper Receiver w/ Micro Brake .45 Caliber Ultralight Profile Black

Range Tool AR-15 A1 Slick Side Stripped Upper Receiver Black

EDEMO XTS Complete Upper Receiver w/o BCG w/ 12in Rail AR-15 300 BO 24.75in 16in Barrel Carbine 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride

USED Next Level Armament NLX Elite 5.56x45mm NATO AR-15 Upper Receiver Stripped Forged Black NLX100 EDEMO1 Used Condition Fair Missing Item

FM Products MIKE-9 9mm Complete Upper Receiver 23.75 inch 16 inch Barrel MIL-SPEC Rear Charge 1-10 Twist 1/2x36 Thread Free-Float Nitride Black

Moriarti AR-15 5.56/.223 7.5in Pistol Shark Mlok Upper Assembly Black 16.5in

Moriarti AR-15 5.56/.223 7.5in Pistol Upper Assembly Black 21in

No Brand BC-15 5.56 NATO Right Side Charging Tungsten Cerakote Upper 16" Parkerized M4 Barrel 1:8 Twist Carbine Length

Bear Creek Arsenal BC15 5.56 NATO 16in Right Upper Receiver M4 Hammer Forged Carbine 1-7 1/2x28 Flash Hide Nitride Tungsten

Bear Creek Arsenal BC15 5.56 NATO 16in Right Upper Receiver M4 Hammer Forged Carbine 1-7 1/2x28 Flash Hide Nitride FDE

No Brand BC-15 5.56 NATO Right Side Charging Tungsten Cerakote Upper 16" Parkerized M4 Barrel 1:7 Twist Mid-Length Gas

Bear Creek Arsenal BC15 .350 Legend 16in Bolt Action Style Upper Receiver Heavy 1-16 5/8x24 Flash Hide Nitride

Bear Creek Arsenal BC-15 5.56 NATO 11.5in Bolt Action Style Upper Receiver M4 Barrel 1-7 Twist 1/2x28 Flash Hider Parkerized

Bear Creek Arsenal BC-15 5.56 NATO 20in Bolt Action Style Upper Receiver Government Profile 1-8 1/2x28 Flash Hider Black Nitride Cold Hammer Forged

CBC Industries Unassembled AR-15 Pistol Kit 16 in 7.62X39 Black

Vltor Vis Key Mod Slimline 14in Hand Guard Shell Deflector Only Black

DEMO Aero Precision M4E1-E EM15 Complete Upper 5.56 x 45 16inch HBAR Mid Length 1-7 Twist 1/2 x 28 Thread Cerakote FDE

DEMO Aero Precision M5 Threaded Assembled Upper Receiver AR Platform 22in Low Profile 1-8 Twist 5/8x24 Thread OD Green

CMMG MkG .45 ACP Banshee Fixed Ejection Upper Group Receiver 8in 1-16 Twist 0.578x28 TPI .750in Coyote Tan

CMMG MkG .45 ACP Banshee Fixed Ejection Upper Group Receiver 5in 1-16 Twist 0.578x28 TPI .750in Midnight Bronze

CMMG Upper Group Resolute Fixed Ejector MkG . 45 ACP 16.1in 1-16 Twist 0.578-28 TPI Coyote Tan

DEMO Ghost Firearms Vital Complete Upper Receiver .300 Blackout 7.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard

Quarter Circle 10 Billet Rear Charging Upper Receiver Black Anodized

Quarter Circle 10 Side Charging Complete 45 ACP Upper Receiver Assembly 7.5in Barrel Black