The EPC-9 Lower Receiver delivers billet aesthetics in a forged package for your next pistol caliber build. This custom-designed enhanced forging is machined from 7075-T6 Aluminum and has several functional features, much like the M4E1, to help simplify the assembly process for the at home builder. Features: Threaded bolt catch pin for easy installation, Integrated enlarged trigger guard to remove any risk of breaking off trigger guard tabs, and provide an overall more rugged platform to build on, Threaded takedown pin detent recess to allow for the installation of a detent and spring with a single 4-40 set screw, Flared magazine well for quick and easy reloads, Proprietary components pre-installed from the factory, Standard AR15 takedown/pivot pin lug pattern, Machined from custom forged 7075-T6 aluminum, Compatible with standard frame GLOCK magazines