Shop › FAXON ARAK-21 7.62X39 16" UPPER FAXON ARAK-21 7.62X39 16" UPPER $919.08 sold out Faxon Firearms ARAK-21, Complete Upper Receiver, Piston Operated, 7.62x39, 16" Barrel, Fits AR-15, Picatinny Handguard, Matte Finish, Black, Includes Bolt Carrier Assembly, MuzzLok 3 Port Muzzle Break and Standard Charging Handle URSSB762 Sold Out Added! Faxon Firearms ARAK-21, Complete Upper Receiver, Piston Operated, 7.62x39, 16" Barrel, Fits AR-15, Picatinny Handguard, Matte Finish, Black, Includes Bolt Carrier Assembly, MuzzLok 3 Port Muzzle Break and Standard Charging Handle URSSB762