M4E1 Stripped Lower Receiver

The M4E1 Stripped Lower Receiver from Aero Precision is the ultimate AR-15 lower. With all of its features, it’s one of the few examples of an upgrade that makes a big difference.

Starting with the build process, the M4E1 makes installation of your lower parts kit a breeze with a threaded bolt catch roll pin and 4-40 threaded rear takedown pin detent hole. Gone are the days of marring your new receiver and watching springs sail through the air. Your build is also one step easier than usual, thanks to the integrated trigger guard with plenty of space to accommodate either bare or gloved fingers. The improvements don’t stop once the build is complete however, because once assembled there is a whole host of other features to appreciate.

The M4E1 Stripped Lower Receiver features increase flare on the magazine well, a design that makes even our mag changes look fast (no small feat). The upper tension screw allows you to swap between uppers with confidence and utilize any manufacturer’s upper receiver with a guaranteed perfect fit. Hidden under the grip during normal use, this tension screw allows you to eliminate that annoying wiggle that’s all too common when using an unmatched receiver set. The icing on the cake is the material itself – this lower is forged from 7075-T6 aluminum rather than the usual 6061. This rugged alloy construction weighs in at only 8.6 ounces and ensures that your M4E1 Stripped Lower Receiver will last for a lifetime.

For anyone looking to round out their builds, the Aero Precision Complete Upper Receiver is another must-have!

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