High-quality lower build kit with everything you need to assemble your AR-15 lower into a pistol. Features an Enhanced Polished Trigger (EPT), Magpul Grip, Magpul Trigger Guard, and black-oxide-coated hammer and trigger springs. Also includes an SB Tactical SBA3 Adjustable Pistol Brace, castle nut, latch plate, carbine buffer spring, 5-position mil-spec buffer tube, and standard carbine buffer.