This is my North American Arms (NAA) mini revolver model.   It is a solid (no moving parts) 1:1 scale model.  You can of course scale it to whatever size you like in your slicer.  You could scale it down for GI Joe if you wanted or make it full-scale for a costume or something.

The NAA mini revolver is one of the smallest handguns commercially available.  They are made in Provo, Utah in the United States.  I find them to be fascinating little guns.  They've made them in a variety of configurations but, I've just done the more traditional version.  I have it in .22lr with the 1 5/8 inch barrel and with the 1 1/8 inch barrel.  I also have the .22 short with the 1 1/8 inch barrel.  I only had dimensions for the .22lr, but I'm assuming the .22 short is just shorter (about .3 inches I assume).  There is also a .22 magnum, but I'd probably need more dimensions to make an accurate model of that.  I may add more models later if I become more familiar with the dimensions.

If interested in other varients let me know and maybe you can provide the specifics so I can make it.

This model was created using Solidworks with measurements taken from a NAA .22lr 1 5/8 inch barrel with folding grips.  The handle and grips are hard to get exact and may not be 100% accurate, but all in all, I'm pleased with how it turned out.

Please see my other gun models as well:

Beretta 92/M9: https://www.printables.com/model/1828488-beretta-92sb-m992f-and-commemorative-pistol-model

Tokarev TT-33: Tokarev TT-33, TT-33C and M57 Pistol Model by nightfox90 | Download free STL model | Printables.com

1911: 1911 Pistol Model (1911, 1911A1, Series 70, Series 80, Commander, Custom) by nightfox90 | Download free STL model | Printables.com

Colt 1903 Pocket Hammerless: Colt 1903 Pocket Hammerless (Type I, II, and III) by nightfox90 | Download free STL model | Printables.com

Star Model B: https://www.printables.com/model/1414804-star-model-b-pistol-model

I also have ammunition models:

https://www.printables.com/model/622260-ammunition-cartridge-models-of-various-caliber