Gun is great when not running a suppressor on it. I put the can on and I get failures in 3-5 rounds. I have sent it back to CZ once, they polished everything. The gun is still failing with the can. My only thought is to beef up the recoil spring. Any other suggestions? If the spring upgraded spring doesn’t fix it, I will probably sell it. I am currently upgrading my M&P 2.0 with apex threaded barrel, apex trigger, stronger recoil spring, and suppressor night sights.