I don''t see how to post a new topic. I wrote what is literally "the book" about how to make silencers. My .22 book shows you how to internally thread any 22 barrel, without taking the gun apart or sending your barrel to anyone. My baffles do need cleaned every 300 rds or so, but that's easy and ALL .22lr cans need cleaning every 300 rds or so, the .22's powder just leaves too much residue for things to be otherwise. I can make one of my superbly effective baffles in less than 3 minutes, including time to anneal the copper screenwire and let it air cool. :-) I have made 10 .22 cans in one day, threaded the barrels, screwed the cans onto the guns and testfired each one. It's that easy. With the brass piloted drill bit that I show you how to make, you can counterbore the barrel and tap it in less than 5 minutes.