Did you know that there are certain holsters that are considered to be in the same class with machine guns? These holsters are controlled by the National Firearms Act, and are called ‘any other weapons.’ They require a $5 federal tax stamp to own one with the gun.
Here is the funny part: you can own the holster, and that is legal. You can own the gun, and that is also legal. Own the holster AND the gun that fits in it without the form and the tax stamp? Federal Felony.
Can you tell them apart? One of the following pictures is an AOW, and one is not:
There is no real difference in form or function, but if you should buy the wrong one at your next gun show, or make one yourself, you will get five years in club fed as a result.
Gun control laws are stupid and arbitrary. (and it is the top picture that is the AOW)