Bolt: Bolt is made of Mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec.

Build Kit: A high-quality lower build kit with everything you need to assemble your AR-15 lower into a pistol. Features our Enhanced Polished Trigger (EPT) fire control group which features finely polished contact surfaces and then finished off with a super slick nickel coating. This results in a trigger that is significantly smoother than a standard Mil-Spec trigger assembly. Pistol kit also includes a Shockwave Blade pistol stabilizer, Shockwave tube, Magpul MOE grip, MOE trigger guard, carbine buffer spring, and standard carbine buffer.