The Strike Industries AMBI Magazine Release works with Mil-Spec dimension AR15 lower receivers. So it will most likely not work with an Aero Precision M5 Lower.
The AMBI MR is only compatible with mil spec AR15 models.
Yes, the Strike Industries AMBI Magazine Release is compatible with a Fight Lite SCR as they utilize standard AR15 magazine releases.
The Strike Industries AMBI Magazine Release should fit that lower.
Yes it should, AMBI Magazine Release drops into any receiver designed to accept a mil-spec magazine catch.
This is not designed for fixed mag AR15's.
From appearances, you should retain clearance for both to be functional.
Due to the extended width of AR10 magazines, this will not work in an AR10.
It will be just barely enough room to actuate both of them freely with a tiny amount of clearance between the BAD Lever and this AMBI mag release.