The trigger pull on my M&P22 (while hammer based) is still a reasonable approximation of the striker fired M&P trigger pull. They have similar take up, pull weight and travel. They both break clean with little over travel. I think the M&P22 makes a good trainer for the M&P 9mm/40/45 but note that sans recoil / muzzle flip the benefit of a training gun is limited. Didn't stop me from buying one however. Plus it's just plain fun!