Just added a new pew pew to my batch. Smith and Wesson M&P CSX. Fits and feels great. I have small hands so I put the small back strap on. Very good feel. Tried changing the mag release for the left hand. Failed-my fault. Initially could not get the 10th round in the 10 round mag or the 12th round in the 12 round mag. After sitting for a couple of hours both mags took the 10/12th rounds. Weather prevents shooting outdoors. May hit Shoot Point Blank. Will let you know how it shot for me. So far, I really like it.