All the guns tend to have slightly different controls. They'll mostly be pretty close in each case but there can be variations in size and placement within the "zones" we expect to find such things. For example most slide releases are levers located along the left side a little above the trigger. But the Ruger Mk III uses a button there instead of a lever. And the safeties on some guns are actually de-cockers. Again, for example, the Beretta 92fs has a slide mounted decocker that is up high and at the rear of the slide while the decocker on a Sig is a long throw lever that sticks out along the left hand upper side of the grip scale. So there is some learning and checking that needs to be done for each firearm.
I'm a big fan of separate .22 pistols. The only really good reason for a conversion kit would be if I were shooting with ONLY ONE handgun to prepare for matches or the like. But I just enjoy the variety of jumping around too much. So instead of some parts that can't be shot sitting around I opted to buy whole separate guns. That way I can just pick up and go or I can shoot one while a buddy or girl friend shoots the other... once I trust them not to shoot themselves, me or anyone else....
If you look around enough at this exact same question that gets asked so often you'll find that for .22 handguns there are a few that keep coming to the top. They are;
- Ruger Mk III in the swept back style or the 1911'ish 22/45 model.
- Browning Buckmark. The URX version has nicer grips
- S&W 22a
- GSG 1911
If you opt for a Ruger 22/45 model pay the extra to buy the version that has the replaceable wood side scales. The other cheaper all one piece models are simply too skinny to fit anyone normal. I have no idea what the heck Ruger was thinking when they approved that particular model.
If we toss in a revolver to the mix the list grows by the following two guns;
- S&W 17, 617 or K22
- Ruger Single Six or these days an option is their Single Ten
Obviously there are other guns out there but these are the ones that no one says are at all bad... at least MOSTLY no one says anything bad about them. Any of these will treat you well and provide many years of reliable and accurate use for not a lot of money.
If you don't mind spending more than there are some really nice pistols. But they don't come at beginner friendly prices. And in fact at just a little under $1000 a new S&W 617 might not be considered beginner friendly either.