Ready to build out a lower, but wanting to minimize spare parts that might tempt you into yet another build? The Aero Precision M4E1 lower parts kit for builders is just what you’re looking for. This MIL-SPEC parts kit contains all of the small parts you need to build an M4E1 lower receiver but drops the parts you were going to toss in your parts bin anyway in favor of aftermarket upgrades. The remaining components are built to proper MIL-SPEC quality for maximum reliability and compatibility.

This kit does not include a fire control group, allowing you to build out the rifle you want with the bare minimum of leftovers.

Kit includes:

Magpul MOE Grip in Black
Takedown Pin
Pivot Pin
Takedown/Pivot Detent
Takedown/Pivot Spring
Bolt Catch
Bolt Catch Buffer
Bolt Catch Roll Pin
Bolt Catch Spring
Magazine Catch Body
Magazine Catch Button
Magazine Catch Spring
Buffer Retainer
Buffer Retainer Spring
Safety Selector
Safety Selector Spring
Safety Selector Detent
4-40 Set Screw (for threaded takedown pin detent hole)
Aero Precision takes some of the most state-of-the-art manufacturing techniques and equipment derived from their work in the aerospace industry and applies it to their products in the firearms industry. They have utilized their knowledge from years of building aircraft components to design and engineer AR-15 handguards, receiver sets, scope mounts, and more. They treat every product as if it were a precision flying machine and adhere to strict quality standards to ensure law enforcement, military, and civilian customers receive a product they can rely on.

ADDITIONAL INFORMATION
WEIGHT0.3 oz
COLOR
Black, FDE