Shop 4,476 Deals on Upper Receivers

Radian Weapons Model 1 MOE Upper M-LOK Rail with Charging Handle, Flat Dark Earth - Tactical Excellence - R0406

Radian Weapons Model 1 Upper and Handguard Set - Superior Performance in Black - R0196

Spikes Tactical .223 Rem/5.56 16" Barrel Complete Upper Assembly, Mil-Spec Phosphate Coated, 12" Black Free Float BAR2 Rail - STU5435-R2S

CMMG Dissent 6.50" Upper 9mm with 1:10 Twist Rate and M-LOK Rail - Pistol-Length with Charging Handle - Armor Black - 94B6829AB

Battle Arms Workhorse 16" Upper .223 Wylde 1:8 Free Float M-LOK Rail Carbine-Length, Gray

Charles Daly AR410 .410 Bore Upper Receiver - Black - 500.219

Sons of Liberty Gun Works .223 Remington Upper with 16" Barrel, Black - EXO3UPPER16556

LanTac USA LLC USR, Upper Standard Receiver, 556NATO, AR-15, M4 Feed Ramps, Anodized Black

Bushmaster M4 Patrolman's 20" AR-Style Upper Receiver 5.56x45mm 1:7, Black - 0040008BLK

Stern Defense 16.10" Classic Upper 9mm 1:10 Free Float M-LOK Rail, Black

Sharps Bros AR-15 223 Rem/556NATO Complete Upper Receiver - SBBU01

Aero Precision EPC-9 Threaded Complete Upper Receiver 8.3in 9mm w/ ATLAS R-ONE 7.3in Handguard Anodized Black

Aero Precision M4E1-T Upper Flat Dark Earth 5.56 10.5 Barrel No BCG/CH

Aero Precision M4E1 Complete Upper Black 5.56 18 Barrel w/ ATLAS S-ONE

Aero Precision M4E1 Enhanced 5.56 10.5 Barrel Complete Upper Receiver

Aero Precision M4E1 Enhanced .300 Blackout 8 Barrel Complete Upper Receiver

Aero Precision M4E1 Enhanced 10.5 5.56 Barrel Complete Upper Receiver

Aero Precision M4E1 Complete Upper Receiver 5.56 Mid 14.5 Barrel

Aero Precision AR15 16 Barrel 5.56 Complete Upper Receiver with Pinned FSB

Gemtech GVAC 16. 10" Upper Receiver 5.56x45mm 1:8, Black - 13833

Aero Precision M5 Complete Upper Receiver 20in .308 CMV Rifle Barrel w/ATLAS S-ONE 15in M-LOK Handguard Anodized Black

TacFire AR-300 Unassembled Pistol Build Kit, Black

TacFire AR-15 Pistol Build Kit, Black

Anderson Manufacturing 16" Classic Upper 5.56x45mm 1:8 Carbine-Length, Black