This Complete Palmetto State Armory Pistol Lower with SB Tactical SBA3 Adjustable Brace is fully assembled and ready for your Pistol Upper! Receiver is machined from 7075-T6 Aluminum Forgings Hardcoat Anodizing: MIL-A-8625F, Type III, Class 2 7075 Receiver Extension A2 Classic grip, Black SB Tactical SBA3 Adjustable Brace, Black USGI Classic trigger guard, Black Standard Carbine Buffer Un-notched Hammer compatible with 9mm use Caliber: Multi