I wanted to install a thumb safety on my 2011 that gave a better, more solid feel for those of us who hold a pistol in the 'other' hand as much or more than the 'right' one. So I was looking at pinned safeties, and came across one on the EGW site that uses a extended hammer pin to capture/hold the right-side grip safety, instead of the extended sear pin of which I'm familiar with. Not only does the thicker hammer pin appear to hold the right side piece tighter, the addition of the 'sleeve' that fits through the grip safety helps maintain alignment better than that found in the typical ambi safety. I'm impressed. The 'gas pedals' are a little larger than I am used to, and I will probably thin those down a bit after getting a bit more time with the pistol. It was a lot more money than I wanted to spend on a grip safety, but maybe, just maybe this will be the last one I fit to this pistol. Time will tell. Oh, and if you're thinking of getting one for a 2011, make sure you add the extra length hammer pin ($5 bucks) as well.