I no almost nothing about supressors or how to get them. I do know that because I'm in Washington I cant use it here but can own it. I have a newly bought walther p22 I'd like to surpress tho. What do I need? Is one of those addapters and the can all I need? And how do I go about getting my tax stamp? Can I buy it in oregon? Or do I need to find a washington dealer? I would love to get in on one of these group buys, but not sure if I can. Any thing you can do to help is appreciated.