§ 215.850. Possession, Manufacture, Transport, Repair, Sale of Certain Weapons.

A. 

A person commits an offense if such person knowingly possesses, manufactures, transports, repairs, or sells:

1. 

An explosive weapon;

2. 

An explosive, incendiary or poison substance or material with the purpose to possess, manufacture or sell an explosive weapon;

3. 

A gas gun;

4. 

A bullet or projectile which explodes or detonates upon impact because of an independent explosive charge after having been shot from a firearm;

5. 

Knuckles; or

6. 

Any of the following in violation of Federal law:

a. 

A machine gun;

b. 

A short-barreled rifle or shotgun;

c. 

A firearm silencer; or

d. 

A switchblade knife.

B. 

A person does not commit an offense pursuant to this Section if his/her conduct involved any of the items in Subsections (A)(1) through (5), the item was possessed in conformity with any applicable Federal law, and the conduct:

1. 

Was incident to the performance of official duty by the Armed Forces, National Guard, a governmental law enforcement agency or a penal institution; or

2. 

Was incident to engaging in a lawful commercial or business transaction with an organization enumerated in Subparagraph (1) of this Subsection; or

3. 

Was incident to using an explosive weapon in a manner reasonably related to a lawful industrial or commercial enterprise; or

4. 

Was incident to displaying the weapon in a public museum or exhibition; or

5. 

Was incident to using the weapon in a manner reasonably related to a lawful dramatic performance.

Note: Under certain circumstances this offense can be a felony under state law.