This was my first attempt at making a gun, and frankly, it is almost Bethesda level quality ;p. I did rig it so that it can open, and you can pull the trigger. As well as making some simple ammo/shells for it.
The gun has 3123 verts, 6238 tris, using 4k textures. The shells have 136 verts, 268 tris, and use a 1k texture.
Not my best work, but it will do in a pinch.
If you need another format, send me a message and we can probably work something out.
RenderHub
Where to buy:
https://www.renderhub.com/thedevian/12-gage-double-barrel-shotgun