Shop 4,464 Deals on Upper Receivers

Iron Horse Upper Hand-Guard Kit Black

Ghost Firearms Complete Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol Length 4150 M4 Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard

Ghost Firearms Elite Complete Barreled Upper Receiver 9mm Luger 5.5in Blowback Type Gas System 4150 Chrome Moly Steel Barrel 1-10 Twist 7in M-LOK Free

Ghost Firearms Vital Upper Receiver Rifle Lower Parts Kit 7.62X39 16in Carbine Light HBAR Barrel 1-10 Twist 11in M-LOK Free Float Hand Guard A2

Ghost Firearms Elite Complete Upper Receiver 9mm 9x19 Para 16 inch 4150 Light HBAR Barrel 1-10 Twist 14 inch M-LOK Free Float Hand Guard A2 Flash

USED TacFire DPMS Complete Upper Assembly Low Profile .308 Winchester 20in Type III Hard Anodized Black Large EDEMO4 Used Condition Like New

Black Rain Ordnance Milled Upper Receiver .308 Black

USED Radical Firearms AR-15 Complete Upper Assembly 16in 7.62x39 4150V HBAR Contour 1/10 Twist 10in FGS MOE A2 Flash Hider Black

Complete AR10 Upper Receiver- 308, 10.5" Barrel- 9.8" MLOK

KAK Complete AR10 Upper Receiver - 243 Winchester - 19" Barrel, 15: MLOK

KAK Complete AR15 Upper Receiver - 9mm - 4" Barrel - 2.9" MLOK

KAK Complete AR15 Upper Receiver - 300 Blackout - 4.75" Barrel - 5.5" MLOK

USED Matador Arms Mat9 Upper Receiver 9mm 7.825 in 1-10 Twist 1/2x28 Threads 4150 Lightweight Nitrided FDE MAT9-U-FDE EDEMO1 Condition Fair Used

FM Products MIKE-45 .45 ACP Build Kit 16 inch Front Charge 4-Port Micro Brake Black

USED Aero Precision AR15 Stripped Upper Receiver - XL Black EDEMO2 Used Condition Like New

Aagil Arms Ted Nugent's Signature Series 5.56 NATO AR-15 Upper Receiver Assembly w/ 15in Cobra Style Handguard Gun Black Cerakoted

Aagil Arms Complete AR-15 .223 WYLDE Upper Assembly 16in Barrel Length Carbine 1-7 Twist w/ 15in Clamp on Key Mod Cerakote Robin Egg Blue Medium

Noveske 3000169 AR-15 Stripped Upper Receiver Gen3 Black Hardcoat Anodized

Noveske 3000083 Gen1 Stripped Upper Aluminum Black Anodized Receiver for AR-15

Guntec USA AR-15 Complete 5.56 Upper Receiver w/o Lower Parts Kit N.3 15in Air-Lok M-Lok Handguard MLS Gen 2 Stock Assembly Carbine Length .750 Gas

Sharps Rifle Company 18in 25-45 Sharps Complete Upper Assembly HBAR Profile Black

Jacob Grey Firearms Ultralight Complete Upper Assembly 5.56 NATO 16in Black

Brigade Manufacturing AR Complete Upper Receiver Forged 9mm 5.5 inch Barrel FDE Mini Can 5 inch Rail No Charging Handle NO BCG

CMMG MkG .45 ACP Banshee Fixed Ejection Upper Group Receiver 5in 1-16 Twist 0.578x28 TPI .750in Sniper Grey