This is everything you need to build an AR10 platform .308 riffle. Kit consists of Aero Precision M5E1 upper, lower, handguard Liberty Screaming Eagle, this lower is very unique with its Liberty sheild logo engraved in lower. Comes with Aero Precision nickel boron BCG, flash hider, .750 gas block, gas tube, charging handle, buffer tube kit, lower parts kit. Balistic advantage 18.75" .308 barrel 1:10 twist, Magpul Industries STR stock and 1 20 round magazine. Must pass federal back ground check. Must ship to FFL.This is not an assembled rifle! Only one left.