Shop 4,464 Deals on Upper Receivers

USED Colt Upper Assembly Kit AR-15 16.1 in 5.56x45mm 1-7 Twist 1/2x28 No Handguard Black EDEMO3 Used Condition Fair Installed/Mounted

Vltor Keymod Polylithic Upper Ext. Mid Length Black

Vltor Vis Fusion Carbine 15in with Keymod And Forward Assist Black

Vltor Mid- Length Upper Receiver with Shell Deflector Only Black

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

Ghost Firearms Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 Moly Steel Barrel 1-7 Twist 7in M-LOK Free Float Hand Guard A2 Flash

Ghost Firearms Upper Receiver Rifle Lower Parts Kit 9mm 9x19 Para 16in Carbine Light HBAR Barrel 1-10 Twist 14in M-LOK Free Float Hand Guard A2 Muzzle

Ghost Firearms Upper Receiver Rifle Lower Parts Kit 9mm 9x19 Para 16in Carbine Light HBAR Barrel 1-10 Twist 14in M-LOK Freefloat Handguard A2 Muzzle

Ghost Firearms Complete Upper Receiver Rifle Lower Parts Kit 5.56mm 16in Butt Stock 4150 M4 Barrel 1-7 Twist 14in M-LOK Free Float Hand Guard A2

Ghost Firearms Upper Receiver Rifle Lower Parts Kit .300 Blackout 16in Pistol 4150 Moly Steel Barrel 1-8 Twist 14in M-LOK Free Float Hand Guard A2

Ghost Firearms Upper Receiver Rifle Lower Parts Kit .300 Blackout 16in Pistol Moly Barrel 1-8 Twist 14in M-LOK Free Float Hand Guard A2 Flash Hider

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Light HBAR Barrel 1-8 Twist 11in M-LOK Free Float Hand Guard Flash

Ghost Firearms Elite Complete Upper Receiver 5.56x45 NATO 10.5 inch Carbine Length 4150 M4 Barrel 1-7 Twist 9 inch M-LOK Free Float Hand Guard A2

Ghost Firearms Upper Receiver Pistol Lower Parts Kit 5.56mm/.223 10.5in Carbine Moly Barrel 1-7 Twist 9in M-LOK Free Float Hand Guard A2 Flash Hider

DEMO Aero Precision M4E1 Assembled Upper Receiver Thread M-LOK Handguard Anodized Brown

Bilson Arms Pump Style Forward Charging Upper Assembly 300BLKFC-UA 16 inch 1-8 Twist Cerakote Graphite Black

Bilson Arms BA-15FC Pump Style Forward Charging Upper Assembly 5.56mm/.223 Remington 24.5in 16in 1-7 Twist 1/2-28 Free-Float A2 Birdcage

Bilson Arms 9mm FC PCC-UA Pump Style Forward Charging Upper Assembly with 4140 Nitride Coated Chrome Moly Steel Barrel FDE/Black 1

DEMO Aero Precision M5E1 Complete Upper Reciever .308 20in Rifle Barrel 1-10 Twist 5/8x24 Thread Free-Float Handguard Stainless Steel anodized Black

DEMO Anderson Manufacturing Complete Upper 16 inches AOR B2-K612-AF00-0P

M4e1-T 223 Wylde Assembled Upper Receiver - M4e1-T 223 Wylde 16'''' Bbl Complete Upper With Romeo5 Red Dot

Aagil Arms Complete AR-15 5.56 NATO Upper Assembly 16in Barrel Length Carbine 1-7 Twist w/ 15in Clamp on Key Mod Cerakote Flat Dark Earth Medium

Guntec USA AR-15 Stripped Billet Upper Receiver 15 in Air Lite Series Honeycomb M-LOK Handguard Combo Set Anodized Black

Rock River Arms BT-3 Completed Upper Receiver 6.5mm Creedmoor 32in 24in Barrel Standard SS Fluted Profile 1-10 Twist 5/8x24 Thread M-LOK Handguard