For anyone seriously contemplating buying a real suppressor I'll throw this out there for you. Don't waste your money on a .22 can when you can only use it on .22 caliber. The whole idea behind owning a suppressor is being able to use it on as many host guns as possible. With that being said I own 2 suppressors. One is a AAC M-4 200 for use on my M-16, the other is a 9mm AAC can that I have used on .22's, 380's, 9mm's....etc. I have a handful of guns I had threaded to 1/2 X 28 TPI and they all work great. I have heard many people argue that a .22 through a 9mm can is not going to be as quiet, but those same people who tried to argue this case could not tell a difference in the sound when I used my 9mm can vs their own .22 can. Why pay a 200 dollar tax and not get your full money's worth? You can even get a .45 can and shoot smaller calibers through it as well, but it gets tricky due to the thread patterns and often ends up costing a lot to get custom thread adapters made. Owning NFA weapons is not cheap, but if you are going to do it, try to maximize what you have for less money!