5.56x45mm NATO Upper Receivers

Radian Weapons Model 1 Complete Upper w/ 17 M-LOK Handguard

Faxon Firearms ARAK21 Complete Upper Midnight Bronze 5.56 16 Barrel

Faxon AR-15 ARAK-21 Upper Receiver Assembly 5.56x45mm NATO 12.5" Barrel

Faxon Firearms Ion Ultralight Complete Upper 5.56 / .223 Rem 16 Barrel 13 Handguard

Aero Precision AR15 Stripped Upper Black

Aero Precision Standard Assembled AR-15 Upper Receiver Aluminum Black

Luth-AR Slick Side A1 AR-15 5.56 NATO Assembled Upper Receiver

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

DPMS Kitty Kat Complete Upper 5.56 7.5 Threaded Barrel Quad Rail Handguard

Fortis Manufacturing Billet Dust Cover Flat Dark Earth

Geissele AR-15 Super Duty MOD1 Pinned and Welded Complete Upper Receiver 5.56x45mm 13.9" Cold Hammer Forged Barrel M-LOK Black

Geissele AR-15 Super Duty MOD1 Complete Upper Receiver 5.56x45mm 12.5" Cold Hammer Forged Barrel M-LOK DDC

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

Geissele AR-15 Super Duty MOD1 Complete Upper Receiver 5.56x45mm 10.3" Cold Hammer Forged Barrel M-LOK DDC

Geissele AR-15 Super Duty MOD1 Complete Upper Receiver 5.56x45mm 10.3" Cold Hammer Forged Barrel M-LOK Black

Geissele AR-15 Super Duty MOD1 Complete Upper Receiver 5.56x45mm 11.5" Cold Hammer Forged Barrel M-LOK DDC

Geissele AR-15 Super Duty MOD1 Complete Upper Receiver 5.56x45mm with Pinned 14.5" Cold Hammer Forged Barrel M-LOK DDC

Battle Arms Workhorse AR-15 Complete Upper Receiver 223 Remington (Wylde) 16" Barrel

Battle Arms Development Workhorse Forged Upper Receiver for AR-15

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

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

Colt Monolithic AR-15 Complete Upper Receiver 5.56x45mm NATO 16" Barrel

One Horse OH-15 Complete Pistol Upper 5.56 7.5 Barrel CH BCG

Daniel Defense GL/SSC URG AR-15 Complete Upper Receiver 5.56x45mm NATO 12.5" Barrel