The thing is the 1911/2011 platform is really designed for the the longer 38super/45acp. They don't offen work well with the shorter 9/40 cartridge. Most of the guys using 40 load them long in 1.175-1.200" range. We have a lot of people using the 16-40 but I doubt any of them are stock out-of-the-box guns, they always need something it's seems. I've shot my both M&P 40 & 9 Pro in Limited without feeling that handicaped, I don't shoot to make my living, I shoot to have fun and yes I have a 6" SVI 40 with over $2K invested but it doesn't make me shoot that much better.