I also recommend looking at the numerous posts in just the last six months, but... here is some re-hash of P22 info.
Morgayne was asking me about the compensator. This is what I wrote, in case anyone else is wondering about this:
"Well, my view of the compensator is that it doesn't look that great, it shifts the balance of the gun forward, and it doesn't do anything, as there is no porting in the barrel or the barrel sleave. So it is really just a paper weight sitting on the front of your gun, to try and make the gun look like something when you put a 5 inch barrel on it instead of the 3.4 barrel the normal model has, and which is prohibited here in Canada. I split the difference on mine, and reduced the barrel down to 106mm (a little over 4.1 inches). The gun has been an absolute gem ever since I did that (about a year ago). I've put something like 20,000 rounds through it since then.
Before I had it modified, I took it to the range a grand total of one time. After the first 50 rounds or so, the screws that hold the compensator in place started to losen and the compensator moved. Since the front sight is on the compensator (the way it comes from the factory) you will notice this movement right away, as your sight picture will be screwed up. There are three screws on the compensator. A set screw at the top that doesn't need to be tightened up much, and then two left-to-right oriented screws under the barrel. It is only one of these that you are supposed to tighten up very much. I can't remember which. Some guys really cinch all the screws down and damage the barrel sleave. I don't recommend this, as you have to take the compensator off to clean the gun anyway. I recommend that if you don't have the barrel cut to 106mm, just take the compensator off and move the front sight to the place for it at the front of the slide (there is a flat plug in there when you buy the gun). The gun will look a bit like a P-38 type of thing with the barrel sticking out.
The P22 is an awesome little fun gun, once you resolve the compensator issue."
I love shooting my P22. It is one of the fastest shooting .22LR pistols around. I actually can't think of anything that is faster. My GF and I also have a SIG Mosquito and a Ruger 22/45 and neither of these can be fired anywhere near as fast as the P22. With the P22 I can get all 10 shots off and on target in under 2 seconds. It's damn fun and i think that rapid fire drills with the P22 have helped me get better with rapid firing centre fire pistols (which is hell of a lot harder to do accurately).
This is me shooting my P22 rapid-fire. You can see tons of similar videos on Youtube;
http://www.youtube.com/watch?v=Fcg9aZ7Gfqw
Here's my P22:
Here is what it looks like in my (normal sized for a large man) hands:
Me shooting the P22:
As compared with a USP:
Yes, the gun and the grip are very small. But having shot about 20,000 rounds through mine, I can tell you that i don't notice the grip issue at all when actually shooting - either one handed or two handed. I have three of the extended finger groove mags and one of the flush mags, and I often forget which I have in the gun when I am shooting.
You can order extra mags from the States if you like. All the mags for these guns are 10 round.
Check my recent post on this, and just generally check my posts on the P22 if you are interested.
My gun is an "AG" (2006) gun, purchased fairly early in 2006. As I say it has been an absolute gem of a gun since I had it modifed. It comes to the range with my GF and me every single weekend - which can't be said of many of the guns I own.