The M4E1 Lower Receiver delivers billet aesthetics in a forged package. It is machined from 7075-T6 aluminum and compatible with all mil-spec parts. It features an integrated trigger guard, upper tension screw, and an increased magwell flare to aid in quick and efficient magazine changes. Included is a nylon tipped tensioning set screw and threaded bolt catch pin. Rear takedown pin detent hole is threaded for a 4-40 set screw. Threaded Bolt Catch Roll Pin (Included). NOTE: Requires a lower parts kit, buffer & stock of your choosing to complete.

Compliance Notice (Washington Residents):
This item is a frame or receiver only and is not a complete or operable firearm. Washington law regulates the manufacture, importation, distribution, sale, and offer for sale of “assault weapons” as defined in RCW 9.41.010 and RCW 9.41.390.

A frame or receiver standing alone is a part of a firearm. Any future assembly must comply with all applicable federal, state, and local laws. Manually operated firearm configurations (e.g., bolt, lever, slide, pump) are excluded from the statutory definition of an “assault weapon.”