I had a Stag Arms lower on my GG&G upper. I screwed up and cracked the ear off the trigger guard so I bought a DPMS lower. Even with an accuracy wedge it has a much looser fit than the Stag. I build one for my buddy and had the same fit. Doubt it makes much difference but is a little annoying. Seems the front take down pin is were all the slop is. As long as she still good straight I guess thats all that matters.