I was going to install this kit in my XDM 45 but I decided to sell it. It's a springer precision trigger kit and it will only fit the XDM's. $65.00 shipped
I just double checked and it says it will only fit the XDM models. It doesn't specify a caliber. I would assume that it work for all. Apex tactical has caliber specific trigger kits for the S&W M&P line of pistols.