Compatible with standard AR-15 components and magazines

Nylon tipped tensioning set screw

Threaded bolt catch roll pin (included)

Machined from 7075-T6 forged aluminum

Flat Dark Earth Cerakote finish

Rear takedown pin detent hole is threaded for a 4-40 set screw

Weight: 8.61 oz

The Aero Precision M4E1 Lower Receiver delivers billet aesthetics in a forged package. This enhanced forging is machined from 7075-T6 aluminum and compatible with all Mil-Spec AR-15 parts. A threaded bolt catch roll pin offers simpler installation of the bolt catch and virtually eliminates the possibility of damage to the receiver finish during installation (pin included). 1/16" Hex Key required for assembly. An integrated trigger guard eliminates the possibility of breaking the trigger guard tabs and an upper tension screw inserted in the grip tang of the lower receiver provides a fine tune adjustment for the fit of the upper and lower receiver.A threaded takedown pin detent recess allows easy installation of the takedown pin detent and spring with the use of a 4-40 set screw. Increased magwell flare aids in quick and efficient magazine changes. Marked and milled to accept short-throw safety selectors, but will work with standard selectors as well.Aero Precision is known for superior engineering and machining. They push the boundaries of manufacturing and challenge the status quo by constantly looking for new ways to develop and evolve.