AERO PRECISION M4E1 Complete A2 & M4 Lower Receiver BLK

The M4E1 Complete Lower Receiver is the perfect base for your custom AR15 build. This complete lower features our new M4E1 Lower Receiver with an A2 Grip and M4 Stock. Save when you buy it complete and let our specialists do the installation for you! Includes: M4E1 Stripped Lower Receiver - Anodized Black M4 Stock - Black A2 Grip - Black Mil-spec Lower Parts Kit Carbine Receiver Extension AR15 Carbine Buffer and Spring Compatible to AR-15 MIL-SPEC Upper Receivers M4E1 LOWER RECEIVER FEATURES: Threaded Bolt Catch Roll Pin - Allows for simple installation of the bolt catch and virtually eliminates the chance to damage the finish during installation (pin included). 1/16" Hex Key required for assembly. Integrated Trigger Guard - Eliminates the possibility of breaking the trigger guard tabs by integrating the trigger guard into the lower, creating a stronger more rigid platform to build upon. Upper Tension Screw - Allows users to fine tune the fit of the upper and lower receiver using a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver. This provides a tight fit with any standard AR15 upper receiver. Threaded Takedown Pin Detent Recess - Allows user to easily install the Takedown Pin detent and spring with the use of a 4-40 set screw (no more launching detents across the room). Increased Magwell Flare - Increased the flare of the magwell to aid in quick and efficient magazine changes. Marked and milled to accept short-throw safety selectors, but will work with standard selectors as well. Rear takedown pin detent hole is threaded for a 4-40 set screw. Nylon tipped tensioning set screw (Included). Threaded Bolt Catch Roll Pin (Included).MADE IN THE USA SPECS: Platform AR15 Material Machined from 7075-T6 forged aluminum Finish Anodized Black Markings "Cal Multi", "M4-" Serial Number Designation Compatibility Works with standard AR15 components and magazines Weight(s) NA Other Rear takedown pin detent hole is threaded for a 4-40 set screw. Threaded Bolt Catch Roll Pin (Included).