Are cannons NFA items?

[Irving]

Do you have to get a tax stamp for a cannon? If so, is there a certain size that is a threshold?

[the_man]

No ... for a Muzzle loaded black powder Cannon.


Metallic Cartridge cannon is a destructive device requiring a Tax Stamp

2.1.8.2 Large caliber weapons. The second section of the definition states that any type of
weapon by whatever name known which will, or which may be readily converted to, expel a
projectile by the action of an explosive or other propellant, the barrel or barrels of which have a
bore diameter of more than one-half inch in diameter is a destructive device. This portion of the
definition specifically excludes a shotgun or shotgun shell which the Attorney General finds is
generally recognized as particularly suitable for sporting purposes. ATF has issued rulings
classifying specific shotguns as destructive devices because they have a bore of more than one
half inch in diameter and were found to not be particularly suitable forfor sporting purposes.19

[Irving]

Ahh yes, always forgetting about that pesky black powder. Thank you.