Yeah, hes completely wrong. There would be no point in owning a drum if it were illegal to combine with the gun. Guns such the street sweeper were outlawed by name and labelled as DDs, however I believe this is primarily due to the integrated nature of the drum. A saiga-12 has as much sporting purpose as any other semi-automatic gun, and the drum is just an extended capacity magazine (which is perfectly legal). The BATF typically won't outlaw just a magazine (I don't even think they can).
Don't ever assume the BTAF won't outlaw drums, or anything else related to firearms, for that matt
