Shop 4,464 Deals on Upper Receivers

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

Ghost Firearms Upper Receiver Rifle Lower Parts Kit 7.62x39 16in Carbine 4150 Light HBAR Barrel 1-10 Twist 14in M-LOK Free Float Hand Guard A2 Muzzle

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

Quarter Circle 10 Complete 9mm Upper w/ PMUR 5.5in Barrel 1/2 - 28 5.5in HG FH Black

Ghost Firearms Vital Upper Receiver Pistol Lower Parts Kit 7.62x39 10.5in Carbine Light HBAR Barrel 1-10 Twist 9in M-LOK Freefloat Handguard Blk

Ghost Firearms Upper Receiver Pistol Lower Parts Kit 7.62X39 10.5in Carbine Light HBAR Barrel 1-10 Twist 9in M-LOK Freefloat Handguard A2 Birdcage

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Steel Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard A2 Flash Hider

Guntec USA AR-15 Stripped Billet Upper Receiver w/15in Ultralight Series M-Lok Handguard Anodized Purple

Vltor Keymod Polylithic Upper Rifle Black

Vltor Vis Fusion 14in Carbine Keymod Deflector Only Black

EDEMO Next Level Armament NLX .308 AR-10 Billet Upper Receiver Stripped Right Hand Gen 2 Anodized to Mil-Spec Black NLX154 EDEMO2 Used Condition Fair

USED Next Level Armament NLX .308 AR-10 Billet Upper Receiver Stripped Left Hand Anodized to Mil-Spec Black NLX153

Zev Technologies Billet Upper M-Lok Black .223 Rem / 5.56 16-inch

EDEMO San Tan Tactical STT-15 Pillar Billet Upper Receiver Black STT-PILLAR-1 EDEMO2 Used Condition Fair

Moriarti Complete Billet Upper Receiver .308 Cal AR Dpms Low Profile Black

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

KAK Complete AR10 Upper Receiver 358 Win, 16" Barrel, Mid Gas, 15" MLOK

KAK Complete AR15 Upper Receiver - 9mm - 8" Barrel -7.2" MLOK

KAK Complete AR15 Upper Receiver - 300 Blackout - 4.75" Barrel - 4" MLOK

DEMO Midwest Industries Upper Receiver Group 16 inch Barrel .223 Wylde 14 inch Combat Series M-LOK Handguard Mid-Length A2 Flash Hider Black

FM Products Mike-15 .223 Wylde Gen 2 Complete Upper Receiver 24.75 inch 16 inch Barrel Intermediate 1-8 Twist 1/2x28 Thread Free-Float Nitride Black

USED Arms Republic Stripped Billet Upper Receiver AR-15 9mm Black BILLET-UR-9MM EDEMO3 Used Condition Like New

No Brand BC-15 .223 Wylde Right Side Charging FDE Cerakote Upper 16" Parkerized Heavy Barrel 1:8 Twist Carbine Length

No Brand BC-15 .300 Blackout Right Side Charging ODG Cerakote Upper 16" 416R SS Heavy Barrel 1:8 Twist Carbine Length