Shop 4,464 Deals on Upper Receivers

Cobalt Kinetics 9.8in CK-Pro Stripped Upper Receiver Group Flat Dark Earth Cerakote

Aero Precision EPC-9 Threaded Complete Upper Receiver 8.3in 9mm w/ ATLAS S-ONE 7.3in Handguard Anodized Black

Battle Arms Development Authority Elite

Sons of Liberty Gun Works EXO3 Complete Upper EXO3UPPER-10.5-556, 223 Remington/556NATO, 10.5 in Combat Barrel

Lead & Steel All-Rounder Carbine Upper Receiver 5.56

Lead & Steel Just As Good Upper Receiver Group 18in Barrel 1-7 Twist Charcoal

Cobalt Kinetics CK-Pro 5.56x45mm NATO 14.5in Complete Upper Receiver Black Cerakote

Cobalt Kinetics CK-Pro Built Upper Receiver Group 11.5in Barrel 5.56x45mm NATO FDE

Aero Precision M4E1-T Upper 5.56x45mm NATO 16" Government Contour Barrel 15" Mod4 Handguard Olive Drab Green

Aero Precision M4E1 Enhanced No Forward Assist Complete Upper Receiver 10.5in 5.56 Carbine EM-9.3 Anodized Black

Del-Ton Complete Upper 5.56 16 Barrel Carbine Length

Aero Precision Complete Upper Receiver M5 .308 Winchester 18in Fluted SS Barrel Rifle Length w/ ATLAS S-ONE 15in M-LOK Handguard Anodized Black

Anderson Manufacturing AM-15 Upper Receiver Sub-Assembly with Charging Handle

Brownells BRN-180 Upper Receiver .300 AAC Blackout 10 Barrel Side Charging

Aero Precision AR15 Stripped Upper Receiver No Forward Assist FDE Cerakote

Aero Precision M4E1-T Upper 5.56x45mm NATO 16" Government Contour Barrel 15" Mod4 Handguard Black

Griffin Armament CQB AR-15 Pistol Complete Upper Receiver 223 Remington (Wylde) 11.5" Barrel

Aero Precision AR-15 Complete Upper Receiver 5.56 Rifle Length 20 inch Barrel w/Pinned FSB Magpul MOE Handguard A2 Flash Hider FDE Cerakote

CMMG Upper Group Banshee Mk4 .300BLK 12.5in Armor Black

Geissele Super Duty AR-15 Pistol Barreled Receiver 5.56x45mm NATO 14.5" Barrel Black

CMMG Mk4 Banshee Upper Receiver Group 5.56x45mm NATO 12.5in Armor Black

Cobalt Kinetics Pro Aluminum Stripped Upper Receiver Group Black Cerakote 10.8in

Aero Precision Complete Upper Receiver M5 .308 Winchester 18in Fluted SS Barrel Rifle Length w/ ATLAS S-ONE 15in M-LOK Handguard FDE

Aero Precision EPC-9 Enhanced Complete Upper Receiver 8.3in 9mm EM-7.3in Handguard FDE