It works well - SIG SAUER Ambi Mag Catch Assy, 716

I installed this on a Palmetto State AR15 receiver. Installation was not difficult. Magazines drop freely from the lower. I don't know if this would wear the finish after prolonged use. I have a Strike Industries enhanced bolt stop, and this does not interfere with that--nor can I see myself accidentally dropping the mag if I used the bolt stop. I do not think this will work with a Magpul/Troy style lever bolt release.