Looking to build a custom PCC with a little bigger bang? The Foxtrot Mike Products AR-15 Mike-45 Stripped lower receiver is a prefect place to start. These billet .45 Auto lower receivers are stripped down for your Mil-Spec triggers and lower parts, but also includes a pre-installed proprietary bolt release and magazine release. These are designed to feed from GlockA(R) .45 Auto magazines and features a last round bolt hold open. The Mike-45 stripped lowers are machined from 7075-T6 billet aluminum and feature an all-black finish. The receivers are completely made in the USA and are covered under a lifetime warranty. Mfg: Foxtrot Mike Products