Description
As of April 2026, allow 3-5 days for this item to be built and shipped.
Ready to fire on your lower receiver. Barrels available in stainless or chromoly with standard 1:14 twist.
Base model includes 6061 M4 style upper receiver, 8″ black barrel 1:14 twist, muzzle threaded 5/8-24, black flash hider, black gas block, bolt/carrier, charging handle, with 7.25″ Midwest Industries CRM M-Lok handguard.
Upgrade your SCM 18-Micro with a heavy duty Tromix 7075 billet receiver, recommended. Other options also available.
Complete Upper Weight – 3.3 pounds
All Tromix uppers are test fired prior to shipping.
SB 704 applies to all California sales – Must ship to FFL.
