“Spike’s Tactical Enhanced Lower Receiver Parts Kit, 223 Rem/556NATO, KNS Gen II ModII Anti-Rotation Pins, Spikes Billet Trigger Guard, ST Battle Trigger, Ambi Safety Selector, Bolt Catch, Mag Catch, Mag Catch Button, Detents, Plungers, Pins, Springs, Black Finish SLPK301” has been added to your cart. View cart