Destructive Devices

For the purposes of the National Firearms Act (NFA), the term “Destructive Device” (DD) means:

  • A missile having an explosive or incendiary charge of more than 1/4 oz.
  • Any type of weapon by whatever name known which will, or which may readily be converted to expel a projectile, by the action of an explosive or other propellant, the barrel or barrels of which have a bore greater than 1/2 in in diameter.
  • A combination of parts designed and intended for use in converting a device into a destructive device and from which a destructive device can be readily assembled.



  • A shotgun or shotgun shell which is determined by the Attorney General to be generally recognized as particularly suitable for sporting purposes,
  • A device which is neither designed nor redesigned for use as a weapon,
  • A device which is designed or redesigned for use as a signaling, pyrotechnic, line-throwing, safety, or similar device,***
  • Surplus ordnance sold, loaded, or given by the Secretary of the Army pursuant to law such as antique, obsolete bronze or iron cannon,
  • A device which the Attorney General determines is not likely to be used as a weapon,
  • An antique firearm, or
  • A rifle which the owner intended to use solely for sporting purposes

*** Ammunition designed to be used against individuals is available for these 37/38mm devices. This “anti-personnel” ammunition consists of cartridges containing wood pellets, rubber pellets or balls, and bean bags. When a gas/flare gun is possessed with “anti-personnel” type ammunition, it clearly becomes an instrument of offensive or defensive combat and is capable of use as a weapon. Since these gas/flare guns have a bore diameter of greater than one-half inch, fire a projectile by the means of an explosive, and, when possessed with “anti-personnel” ammunition, are capable of use as a weapon, the combination of the gas/flare gun and “anti-personnel” ammunition is a destructive device as defined by the GCA and NFA. As a result, registration as a destructive device is required. (18 U.S.C. 921(a)(4) and 26 U.S.C. 5845 (f)(2).


Pair of French MDL 1786 Bronze Cannons on Carriages

French MDL 1786 bronze on carriage

500lb Howitzer Navy Rifles on Carriage

500lb Howitzer on carriage

Hotchkiss Two-Pounder Rifled Mountain Gun

2lb hotchkiss

350lb Type US Navy Breech-Loading Howitzer

350lb us navy breech howitzer

Afghan Iron Mule Gun with Carriage

Afghan Iron Mule Gun