Never mounted, just showed up in the mail today. Retailers are swamped, this was ordered two weeks ago and decided just to put a Magpul grip on the rifle instead of wait. So, I'm selling this new and never used. The storage is much, much better than a Magpul grip. These grips are supposed to have a more comfortable angle for your wrist. It also has two sized "gap" fillers. This covers the gap where the pin holds your triggerguard in place.