Includes:

• M4E1 Lower Receiver in Anodized Black

• M4E1 Threaded Assembled Upper Receiver in Anodized Black

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).

• 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.

M4E1 Threaded Upper Receiver Features:

• New enhanced forging that gives the upper receiver a "billet look"

• New picatinny profile that blends seamlessly with our Enhanced and ATLAS Series Handguards

• M4 Feedramps

• .250 takedown pin holes

• Laser engraved T-marks