Shop 4,464 Deals on Upper Receivers

Spikes Tactical Upper 5.56 11.5in FN CHF w/9in SAR3 Rail

Guntec USA AR-15 5.56 Complete Ultralight Series Pistol Kit No Lower Flat Dark Earth

Bushmaster 20-inch Predator Upper Receiver Barrel Assembly 5.56mm Black Finish

USED Anderson Manufacturing AM-15 Stripped Upper Receiver Black

Matrix Arms AR-15 Dual Side Charging Upper & BCG Gen 2

USED ODIN Works Billet Upper Receiver AR-15 9mm Low Profile Matte Black UPPER-BILLET-9MM EDEMO6 Used Condition Fair

Vltor Vis Key Mod Polylithic Upper with Slimline 12in Hand Guard Black

Vltor Keymod Polylithic Upper Mid Length Black

Vltor Keymod Polylithic Upper Ext. Rifle Black

Vltor Carbine Length Upper Receiver with Bolt Assist Shell Deflector Black

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

No Brand BC-15 .300 Blackout Right Side Charging FDE Cerakote Upper 16" Parkerized Heavy Barrel 1:8 Twist Pistol Length

No Brand BC-15 .300 Blackout Right Side Charging ODG Cerakote Upper 16" Parkerized Heavy Barrel 1:8 Twist Carbine

Bear Creek Arsenal BC-15 6mm ARC 16in Bolt Action Style Upper Receiver M4 Barrel 1-8 Twist 5/8x24 Flash Hider Parkerized

Bear Creek Arsenal BC-15 6mm ARC 18in Bolt Action Style Upper Receiver Heavy Barrel 1-8 Twist 5/8x24 Flash Hider Parkerized

Bear Creek Arsenal BC-15 224 Valkyrie 20in Bolt Action Style Upper Receiver Heavy Barrel 1-7 Twist 1/2x28 Flash Hider 416R

Ghost Firearms Vital Upper Receiver Pistol Lower Parts Kit .300 Blkout 7.5in Pistol Light HBAR Barrel 1-8 Twist 7in M-LOK Freefloat Handguard A2

Ghost Firearms Elite Complete Upper Receiver 9mm 9x19 Para 7.5 inch 4150 Light HBAR Barrel 1-10 Twist 7 inch M-LOK Free Float Hand Guard A2 Flash

Ghost Firearms Elite Complete Upper Receiver 9mm 9x19 Para 7.5 inch 4150 Light HBAR Barrel 1-10 Twist 7 inch M-LOK Free Float Hand Guard A2 Flash

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 7.5in Pistol Moly Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2 Flash Hider

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 7.5in Pistol Moly Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2 Flash Hider

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 7.5in Pistol Moly Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2 Flash Hider

Ghost Firearms Elite Complete Barreled Upper Receiver Burnt Bronze

Ghost Firearms Upper Receiver Rifle Lower Parts Kit 7.62x39 16in Carbine Light HBAR Barrel 1-10 Twist 14in M-LOK Free Float Hand Guard A2 Muzzle