Reading through this thread thoroughly, I realise why I bought the Ruger Mk IV. The SW22 is definitely better value for the money, but I look at screws that need to be taken out every time you clean and shudder at the wear and torque issues.

Yes, I had one screw back out on the Ruger (nothing is perfect, after all) but some blue LocTite and it has shot a few thousand rounds with no issues.

I hope S&W Find a way to ensure the screw doesn't back out that doesn't include Superman-type tightening every time.