I was looking at a nice Feinwerkbau P34 the other day, and the cylinders are out of date.

Now I know this is a problem for national and international competitors, but is it really a problem for casual users?

How old does a cylinder really have to be before it needs to be binned as dangerous?

I imagine modern cylinders for later models can be fitted to earlier guns, but the original P34 cylinders are rather nice and compliment the shape of the pistol.

I'm not just thinking about Feinwerkbau pistols, but also Walther lp 200 and 300s and Steyr LP1and 5s, etc.

Am I correct in thinking that new cylinders will fit these older guns?