For Christmas the wife got me the conversion kit for my Beretta 92FS to take it from 9MM to 22LR.
It's a simple slide exchange and takes about 30 seconds to do.
Works awesome. I have only put about 200 rounds through it, but it seems perfect.
Yes. The factory kit.
Only thing that I wish was different is that it came with a 10 round mag. Need a couple of 15s
Like Indykid said, makes it an inexpensive shooter. Same feel,same trigger, just less money going down range.