Shop 4,464 Deals on Upper Receivers

Bear Creek Arsenal BC-15 .223 Wylde 20in Bolt Action Style Upper Receiver Bear Claw Fluted Heavy 1-8 1/2x28 Flash Hider 416R Black

Bear Creek Arsenal BC-15 .223 Wylde 20in Bolt Action Style Upper Receiver Straight Fluted Heavy 1-8 1/2x28 Flash Hider 416R Black

Bear Creek Arsenal BC15 .458 SOCOM 16in Upper Receiver Heavy Carbine .936 1-14 5/8x32 Flash Hide Parkerized

Bear Creek Arsenal BC-15 5.56 NATO 16in Upper Receiver M4 Barrel Carbine Length 1-8 Twist 1/2x28 Flash Hider Parkerized FDE

Bear Creek Arsenal BC-15 .300AAC 16in Upper Receiver Heavy Carbine 1-8 1/2x28 Flash Hider 416R Tungsten

Luth-AR 14.5in SOCOM Profile Barrel Assy w/FSB and 2 Pc Handguard 1-7 Chrome Lined

Luth-AR Complete Upper Receiver Assembly .223 26in 16in Bull Carbine 1x9 1/2x28 Picatinny Key MOD A2 Flash Hider Anodized Manganese Phosphate Silver/

ABC RIFLE COMPANY AR-15 Billet Stripped Upper Receiver Cerakote Olive Drab Green

Jacob Grey Firearms 9mm 11in Complete Upper Assembly Black

POF USA Revolution DI Complete Upper Black Andodized 6.5 Creedmoor 20"

Alpha Shooting Sports 5.56 M-LOK9 Pitchfork Pistol Upper 10.3in Black 103-556MLOK9PF

AT3 Tactical AR-15 Slick Side Billet Upper Receiver FDE

CMMG MkG .45 ACP Banshee Upper Group Receiver 5in 1-16 Twist 0.578 X 28 TPI 13.7in Titanium

Spikes Tactical Upper 5.56 18in LW SPR w/13.2in SAR3 Rail

CMMG 9mm Banshee Upper Group Receiver 5in 1-10 Twist 1/2 X 28 TPI 13.7in Tungsten

CMMG MkG .45 ACP Banshee Upper Group Receiver 5in 1-16 Twist 0.578 X 28 TPI 13.7in Tungsten

Tiger Rock AR-15/47/9/300 Stripped Upper Receiver Cerakote Zombie Green Medium

Spikes Tactical Upper 5.56 14.5in 16in OAL CHF Midlength w/12in BAR2 Rail w/ Vortex

Spikes Tactical Upper 5.56 14.5in 16in OAL CHF Midlength w/MOE Handguards w/ Vortex

V Seven M4 Upper Assembly w/Bull'S Eye Forward Assist

V Seven M4 Upper Assembly w/Vertical Lines Forward Assist

Dark Storm Industries DS-15 Complete Upper 16" Lightning 5.56 Non Threaded Black 5.56

Bear Creek Arsenal BC-15 5.56 NATO 16in Upper Receiver M4 Cold Hammer Forged Carbine 1-8 1/2x28 Flash Hider Black Nitride FDE

Bear Creek Arsenal BC-15 5.56 NATO 16in Upper Receiver M4 Barrel Carbine Length 1-8 Twist 1/2x28 Flash Hider Parkerized