New frontier pistol cal upper stripped billet black

FEATURES:
-Machined from 7075 aluminum
-Matte black
-Compatible w/ all standard AR-15/AR-9 components & most aftermarket parts

Other Features: Billet aluminum upper receiver use for most caliber pistols accepts most standard ar15 aftermarket parts.Includes last round hold open feature designed to match lines with new frontier c9 & c45 billet lower receivers.Not machined for gas tube.Intended to be used with blowback systems.