Results for 5.56x45mm NATO Upper Receivers

San Tan Tactical STT PILLAR Billet AR-15 Upper Receiver Black

Radian Weapons Model 1 Upper Flat Dark Earth 5.56

Yankee Hill Machine 110-Billet Upper Stripped Upper

Aero Precision M4E1 Standard Assembled AR-15 Upper Receiver Aluminum Flat Dark Earth

Aero Precision Standard Assembled AR-15 Upper Receiver Aluminum Flat Dark Earth

Luth-Ar M16 A1 5.56 NATO AR-15 Assembled Upper Receiver

Luth-Ar M16 A1 Stripped Upper Receiver AR-15 5.56 NATO

CMMG MK4 Upper Receiver 223 Remington/556NATO Billet

Sons Of Liberty Gun Works M4-L89 Upper Receiver Group 5.56 14.5 P&W Barrel

Colt Firearms LE6920CK-NHG Upper Kit Black 5.56NATO/.223Rem 16-inch

Colt Monolithic AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 10.3" Barrel

Cobalt Kinetics CKPROURG55616BBLK CK-Pro Urg 5.56x45mm NATO 16" Black Cerakote Receiver

Aero Precision M4E1 Standard Assembled AR-15 Upper Receiver Aluminum Anodized Kodiak Brown

Aero Precision M4E1 Standard Assembled AR-15 Upper Receiver Aluminum Anodized Olive Drab

Faxon Firearms ARAK21 Complete Upper Tungsten 5.56 16 Barrel

LMT Defense MRP-L Quad Assembled Upper Receiver 5.56/.300 Blackout

Geissele AR-15 Super Duty MOD1 Complete Upper Receiver 5.56x45mm 10.3" Cold Hammer Forged Barrel M-LOK DDC

AR-STONER AR-15 Complete Upper Receiver 5.56x45mm NATO 16" Barrel Mid Length 15" M-LOK Handguard

AR-STONER AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 10.3" Barrel Carbine Length M-LOK Handguard

AR-STONER AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 8" Barrel Pistol Length M-LOK Handguard

Sons of Liberty Gun Works M4-L89 Complete Upper 5.56 11.5 Threaded Barrel w/ L89 Rail

Cobalt Kinetics CKPROURG556145BLK CK-Pro Urg 5.56x45mm NATO 14.50" Black Cerakote Receiver

Cobalt Kinetics Ck-Pro Urg 5.56 Upper Receiver 13.70in Cerakote Finish

Cobalt Kinetics CKProUrg AR Upper Receiver Group Aluminum Cerakote