Results for 5.56x45mm NATO Upper Receivers

Battle Arms Development Billet Upper Receiver Fits FORTIS REV II Rail

One Horse OH-15 Complete Upper 5.56 16 Barrel SOCOM Profile

Aero Precision M4E1 Enhanced Assembled AR-15 Upper Receiver Aluminum Black

Lbe Unlimited Ar145rbk 14.5 Upper Build Kit 223 Remington Chf Barrel

Lbe Unlimited Ar137rbk Upper Build Kit 223 Remington

Colt Monolithic AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 11.5" Barrel

SilencerCo SCO15 Stripped Upper Receiver for AR-15

FAXON URSSB556-SS-MB ARAK21 16 556 COMP UPPER MB

Aero Precision M4E1 Standard Stripped AR-15 Upper Receiver Aluminum Black

Aero Precision M4E1 Standard Assembled AR-15 Upper Receiver Aluminum Black

Aero Precision AR15 Stripped Upper Black

Aero Precision Standard Assembled AR-15 Upper Receiver Aluminum Black

Luth-AR A2 Carry Handle Style Assembled Upper Receiver w/A2 Rear Sight Cut, Black

Luth-ar UR-01-E3-S A1 Stripped Upper Receiver 223/5.56mm Aluminum Black Hardcoat Anodize Receiver

Geissele Automatics Super Duty MOD1 5.56 12.5 Barrel w/ HuxWrx Flash Hider

Black Rain Ordnance Milled Upper Receiver Gen 2 Black

LBE Unlimited Ready Build Kit Complete Upper 5.56 / .223 Rem 12.5 Barrel Mid Length Gas Handguard

Lbe Unlimited Ar75rbk Ready Build Kit 7.5 Chf Barrel

Broadsword Billet Upper Receiver - Broadsword-89 Billet Stripped Upper Receiver Black

HK MR556 A4 AR-15 Complete Upper Receiver 5.56x45mm NATO 11" Barrel

Radian Weapons Model 1 Upper OD Green 5.56 10 Handguard

Luth-Ar Slick Side A1 5.56 NATO Ar-15 Upper Assembled Receiver Anodized

TacFire AR-15 Complete Upper 5.56 10.5 Threaded Barrel

Ar-15 Stripped Upper Receiver - 5.56x45 Nato Stripped Upper Receiver For Ar-15 Black