I have a 22C with close to 60,000 rounds through it. I bought it back in April of 2014. It's been back to S & W for a roll pin walking out and a firing pin. Other then that it shoots anything I put through it. I do clean it every time I shoot it though, and I think that it key with most 22's. What I like about it is how easy it is to break down and clean and it's a cheap trainer for my Shield 9.