I didn't personally see the table but I was told by a 1500 attendant that a vendor was selling an adapter that threaded onto firearm barrels that allows an oil filter to then be screwed onto the end of the gun. The vendor was telling customers "This is for 'cleaning your gun- *wink wink*.'" They obviously were playing word games to get around calling it what it was, a device that allows you to mount an oil filter onto a firearm to suppress the report. As I had it explained to me once, anything that adapts firearm threads to a device suppressing sound (oil filter, plastic bottle, etc) is itself actually considered a suppressor by the ATF. By extensions it is therefore illegal to possess without having it serialized and paying for the tax stamp. Does anyone know anything about that vendor, that product, and the law pertaining to that particular type of device? I would err on the side of caution every day of the week when you're dealing with the ATF and federal law, so I'm concerned this vendor was misleading their customers by incorrectly creating the belief that they can just play word games and evade the legal implications of possessing something that, in reality, carries felony charges.