The good news is they work great, exactly as advertised. I've never shot such tight little groups at ten yards with my S&W 342pd. I was able to easily see the laser even though it was bright and sunny outside this afternoon. The bad news is recoil was much worse. It's amazing how much recoil the rubber factory grips absorbed compared to the Crimson Trace hard plastic grips. I was finally able to get ahold of some Speer GoldDot 135gr +p bullets and shot a few today and they really stung. I have nothing but respect for you guys who can accurately shoot .357s out of these little snubbies. Overall I'm very happy and impressed with the Crimson Trace grips and would recommend them to anyone.