Oil Can Suppressor
American Specialty Ammo and Cadiz Gun works has come up with a great little adapter that fits on a 1/28
threaded barrel then marries up to the port of a oil filter. The adapter itself is the registered part and costs
just $75 (plus the $200 tax stamp)
Benefits: once the filter gets dirty or stops working, throw it away and get a new one. Its cheap (my TAC-65 costs 3x as much!) and it seems to work on either pistols or rifles. With no moving parts it should last forever.
Cons: Looks……industrial. Also is sure to get some calls to the local BATF office everytime someone sees you shoot it.