I've had the wedge for months finally got the MIAD and installed it. First either the grip has changed or the wedge has because there was no way to insert it as purchased. The grip had two ribs across it just like the wedge and in the same location so it was like having two tab As and no slot B. I tried the simple way first, just put the grip on, it looked bad and did not support the takedown pin spring. So I took the B3 strap that was my least favorite and cut out everything that kept the wedge from fitting being careful not to go too far. With the wedge snug in the grip and the grip assembled it looks fine and supports the spring. To my surprise I really like the B3 strap so it will stay. The final issue was the neat little grip core with the oil bottle. It doesn't really lock in the MIAD, won't seat at all in the +? (the rubber one) but snapped right in the MOE. I have no other inserts so I can pick up another and try it later. Thinking maybe they are having Q.C. troubles that go with a boom so I may kinda slow down on buying gadgets for a bit. Very pleased with the feel and the tight fit the wedge creats but if someone expects a drop in they may want to think twice on the MIAD.