Get the standard moe grip - Aero Precision M4E1 Lower Parts Kit w/Magpul MOE SL

The paddle on the bolt release is too small to fit a Magpul bad lever. The bolt catch also doesn’t travel up as far when the paddle is depressed compared to some other AR’s I’ve felt, but I don’t think this will be a problem, it still functions fine. Also, the MOE SL grip had to be tightened down significantly to not wiggle. I think it has something to do with the shorter screw, larger screw head with no washer, and Magpuls over-reliance on loctite. I’m still kind of worried about it backing out. Excluding the MOE SL grip, the problems are minor and the rest of the parts kit works just fine. I’d play it safe and get the kit with the standard MOE grip.