Warrior Systems WSM15 Billet AR-15 Receiver Set 5.56 NATO / 223 Rem Flared Mag Well

WARRIOR SYSTEMS WSM15 5.56 NATO / 223 Rem Billet AR15 Lower Receiver w/ Flared Mag Well | Black

AERO PRECISION AR15 5.56 NATO / 223 Rem 20" Complete Upper Receiver w/ Carry Handle | Black

WARRIOR SYSTEMS WSM15 5.56 NATO / 223 Rem 16" 30rd Semi-Auto AR15 Rifle | Black

AERO PRECISION M4E1-T 5.56 NATO 11.5" Complete Upper Receiver | Black

LWRC DI BILLET 5.56MM BLK 16.1" #

Wraithworks Billet Slick Side AR-15 Upper Receiver - Black | No Forward Assist or Brass Deflector

TacFire AR-15 .223 / 5.56 Unassembled Upper Receiver Kit - 14.5"