Model: Battle Series Complete Pistol Receiver, Black – MULTI CAL

Our Complete Uppers are built on our 7075 T6 aircraft-grade aluminum
receiver with a 16 4150 Chrome Moly Vanadium Steel barrel which is
coated in a corrosion-resistant QPQ black nitride finish. All our barrels
are finished off with our custom-designed muzzle brake cut from 4150
hardened steel and coated in a black nitride finish. Our barrels feature a
carbine length gas system with a .750 diameter low pro gas block and
304 stainless steel gas tube. Every complete upper comes equipped with
our custom-designed lightweight yet sturdy 17 handguards. These
MLOK-style handguards feature large windows along the top rail allowing

better airflow through the rail to keep your barrel cooler. Internally, our
upper receivers are equipped with our Mil-Spec 8620 heat treated steel
bolt carrier group or BCG. The BCG contains a N0. 158 steel bolt with a
shrouded firing pin and Mil-Spec chrome lined interior. The gas key on the
BCG is secured with grade 8 fasteners and staked to Mil-Spec standards
guaranteeing reliability and smooth cycling. The final piece of our
complete uppers is our ambidextrous CARNO charging handle providing
smooth operation of the bolt when both loading and unloading the
weapon.