American Defense ADM4 Ambi AR-15 Lower Receiver Review

My impressions of American Defense Manufacturing’s ADM4 lower receiver, an ambidextrous AR-15 lower receiver that is functionally identical to ADM’s more well-known UIC lower, but with a slick-sided magazine well instead.

This review is based on my experience with two ADM4 lower receivers and focuses on how the ADM4 compares to other lower receivers available on the market, as well as some of the rolling changes ADM has put on their newer ADM4s when compared to their older versions.

Timestamps
0:00 - Introduction
1:00 - Captive takedown pin detent
2:40 - Set screws
4:25 - Ambi features
7:43 - Pivot and takedown pins
8:14 - Tension adjustment screw
9:27 - Conclusion