A buddy of mine went to an estate sale a little while back and bid on some gun parts in a box, assorted loading stuff, old tools, stocks, barrels and the like. When he got home he found two suppressors. One for a .22 and one for a 9mm pistol. While not the suppressor type of guy, mostly just a hunter, he's thinking of keeping them, but want's to do it legit. Is there a way to go about it? Or if possible can he somehow sell them. He said if it's to much hassle, he'll take the sledge hammer route and be done with it.