With regard to the original question, I have put almost six thousand trouble free rounds through my M&P 9 this year. I have yet to find fault with the gun. The lack of available parts, however, is the only downside to the M&P platform. Like it or not, Glock is the industry standard against which other handguns are judged. Even though many of the parts may not be availbale directly from Glock, they are available. That availability is due to Glock selling them to various venders. Smith has not been as forthcoming. For the casual weekend shooter, parts availability may not be an issue. For a dedicated shooter whe goes through many thousands of rounds a year, the availabilty of parts and the ability to keep your gun up and running should something happen is comforting.