UPPER RECEIVERS

Battle Arms Development, WORKHORSE, Upper Receiver Assembly, 223 Remington/556NATO, 16" Barrel, Mid-length Gas System, Anodized Finish, Black, A2 Flash Hider, WORKHORSE 15" M-LOK Free Float Handguard, Does Not Include Bolt Carrier Group or Charging...

Aero Precision, EPC-9, Complete Upper, 9MM, 16" Barrel, 1:10 Twist, ATLAS S-ONE 15" Handguard, Cerakote Finish, Flat Dark Earth, Does Not Include BCG or Charging Handle EPC-9 Upper Receiver 15" ATLAS S-ONE Handguard 16" 9mm CMV Barrel Product comes...

Aero Precision, AR15 Complete Upper, 223 Remington/556NATO, 20" Barrel, 1:7 Twist, A2 Detachable Carry Handle and A2 Front Sight Block, Rifle Length Gas System, Anodized Finish, Black, Does Not Include BCG or Charging Handle Upper: Standard M4 Upper...