are belt buckle firearms illegal to have?

The Nazi "Belt buckle gun" is in fact an NFA Title II firearm. It is classified as an "Any Other Weapon," and transfers with a 5 dollar tax stamp as opposed to a 200 dollar tax stamp. But it is STILL an NFA weapon, which means it must be registered with the Feds just like a machine gun. I don't know about Colorado law and NFA items, but federal law is pretty clear about it.

It is legal to own where I live, once the federal requirements have been met and tax stamp affixed to the proper form in the possession of the owner.

But it's not something you can buy over the counter like a Title 1 firearm.

As far as its practicality -- that's limited only by your imagination.

Furthermore, a CCW is a state issued license, not federal. So there may be restrictions at the state level regarding NFA items and your CCW license. There are a couple in mine, but they are not outright prohibited.

Edited to add: I have no frame of reference for your "Class 3, Class 2, Class 1" weapons for Colorado. The only "Class 3" etc. in reference to the NFA are Special Occupational Taxpayer stamps. Class 3 for dealer, Class 2 for manufacturer, and Class 1 for importer.

As I have said, the Nazi Belt Buckle Gun is in fact an Any Other Weapon as defined by Title 26 of the United States Code. As such, the process of transfer and ownership is nearly identical to a machine gun, short barrelled rifle, or short barrelled shotgun.

In the state where I live, regular civilians, non-SOT (Class 3 etc) holders may own these firearms. They merely pay the tax for them for the appropriate tax stamp (200 dollars for machine gun, short barrelled rifle, short barrelled shotgun, destructive device, or silencer, and 5 dollars for any other weapon).

Some states require an individual be an actual licensed dealer (FFL Type 01) with a Class 3 Special Occupational Taxpayer tax status in order to own or possess NFA items.

My state is not one of those. Colorado might be. I do not know.

What I DO know is that if you plan on owning one of these, you really need to learn exactly what it is you need to do in order to own one legally, as the ATF folks do NOT have a sense of humor about it.

They are regulated but not necessarily illegal, however, stupid concept.

Some are fired by flexing the abdominal muscles outward....so just a little bloat at the restaurant and you blow your significant other away across the table from you.

There are many things legal to own but illegal to carry on your person.

Since you can buy This NAA .22 caliber revolver and belt buckle for $395.00, I'd have to say that the answer is, "No." http://www.gunbroker.com/item/572574094

its junk..Looks dunb and is a joke from a old George Cloony novie