Faxon ARAK-21 Complete Upper 5.56 NATO 16" Stainless Steel with Muzzle Brake

The Faxon ARAK-21 is a complete AR-15 upper receiver kit chambered in 5.56 NATO, built around a 16" stainless steel barrel. The ARAK-21 operates on a short-stroke piston gas system, setting it apart from standard direct impingement AR-15 uppers and offering enhanced heat management and reduced carbon fouling in the action. The upper ships with a muzzle brake installed. The ARAK-21 platform features its own integrated receiver and barrel assembly; confirm handguard compatibility with the ARAK-21 system before pairing third-party accessories. Finish is matte black anodized.