I started off with this, 12g single shot shotgun. I bought it like this for cheap. Someone had already beaten it with an ugly stick.
So after I cut the barrel down to 5.25 inches it looks like this. A little less ugly but more useless.
I tested it out today with some light target loads and the recoil was stout. I'm sure it would be extra fun with high brass or slugs. I probably will do some other things to it like clean up the grip, maybe try to figure out a little fore end and maybe paint the whole thing "tactical" black or maybe paint it an obnoxious multi color
(Disclaimer I am a 07/02 FFL)

So after I cut the barrel down to 5.25 inches it looks like this. A little less ugly but more useless.

I tested it out today with some light target loads and the recoil was stout. I'm sure it would be extra fun with high brass or slugs. I probably will do some other things to it like clean up the grip, maybe try to figure out a little fore end and maybe paint the whole thing "tactical" black or maybe paint it an obnoxious multi color
(Disclaimer I am a 07/02 FFL)