Barrel: chrome moly steel tri-lug barrel. Chambered in 9mm, (9x19), with a 1/10 twist. The barrel is nitride treated for durability. 
Upper: Forged 7075 T6 aluminum AR-V slick side upper is hard coat anodized black for durability.  These upper receivers are made for us right here in the USA.
Bolt Carrier Group: AR-V 9mm BCG.  Nitride treated 8620 steel bolt, with an enhanced firing pin and external 5.56 style extractor. The bolt carrier group is compatible with most aftermarket fire control groups. 
Lower:. Forged 7075 T6 aluminum and then hard coat anodized, these lowers are purpose built to accept AR-V U9 and CZ Scorpion Magazines.  The lower is assembled with a Palmetto State Armory MOE EPT PDW lower build kit with a Magpul Grip and SB Tactical PDW Pistol Stabilizing Brace.