The Aero Precision Stripped Lower Receiver Gen 2 is the foundation of your rifle. Machined to MIL-SPEC ensuring compatibility with a wide range of standard AR-15 components. Increased magwell flare allows easier insertion of magazines and provides a sleeker look. The grip tang has been machined for a nylon tipped upper tensioning screw. This screw allows any slack present when assembled with an upper receiver to be adjusted out for a tight fit. While not required for assembly, the takedown detent hole is threaded for a 4-40 set screw allowing the takedown spring and detent to be installed without a carbine end plate or rifle stock (screw not included).