CountryBoy19
Grandmaster
Ah... after a brief google search it turns out I was slightly mistaken. These were produced a long time ago (couldn't find an exact date) and ATF did come down hard on the manufacturer, but not for the reason I thought. They were made by SWD (Wayne Daniels) and ATF came down on him because they classified them as silencer parts and he wasn't registering them.IIRC there was a company just a couple years ago selling the bottle adapters. They were transferable on a Form4. Surely someone with good Google-fu can come up with a link.
Sorry for the misinformation guys...