Ready to fire on your lower receiver. Barrels available in stainless or chromoly with standard 1:14 twist. Fast 1:10 twist available in stainless only.
Base model includes 8″ black barrel, 1:14 twist, muzzle threaded 5/8-24, black flash hider, black gas block, bolt/carrier, charging handle, with old-school round free float tube hand gaurd.
Upgrade your SCM18-Micro with the MI-G3 M-Lok hand guard.
All Tromix uppers are test fired prior to shipping.