AlexanderA
Member
The point I was trying to make is that the Destructive Device registry is open, meaning you can get a tank with a (new) main gun, if you go through the NFA formalities. The Machine Gun registry is closed. If you want to put the secondary armament on your tank, you have to use overpriced pre-1986 machine guns. (By the way, each round for the main gun is a Destructive Device in itself. If you want to pursue this hobby, you better have a strong bank account.)The main gun qualifies as a DD, if with working breech (rifled > 1/2" bore; you might have an argument about a smooth bore, but they'd apply the "no sporting purpose" language).