.458 SOCOM 8″ Micro Complete Assembled Upper – Right Handed



Ejection Port Cover

Upgrade Handguard (Optional) *

Gas Block

Upgrade Muzzle Devise (Optional)


Barrel Finish

Bolt Group

SKU: 458-MCRO-CAU-RH Category:


(NOTE) We are currently out of stock on the standard round float tube hand guard for this upper.  You must choose an optional MLok hand guard if you want to order this item.


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 7.25″ old-school round free float tube hand guard.

Upgrade your SCM18-Micro with the MI-G3 M-Lok hand guard.

All Tromix uppers are test fired prior to shipping.