Seems it wasn’t just “possession of an oil filter silencer”:
> Candelario sold and manufactured AR-15 style assault rifles in Maryland without a license. The ATF caught Candelario by using an anonymous man to purchase the firearms in a gas station parking lot. This agent purchased six rifles, as well as two fuel filter silencers.
> Candelario sold and manufactured AR-15 style assault rifles in Maryland without a license. The ATF caught Candelario by using an anonymous man to purchase the firearms in a gas station parking lot. This agent purchased six rifles, as well as two fuel filter silencers.