What is it? Where can I get one?

little ones..
http://kennesawcannon.com/

bigger barrels
http://www.buytheworld.com/cat0-54-219.html


But probably best to build it yourself, or commission a machine shop.

http://www.buckstix.com/howitzer.htm

Yeah, well I have some cannons, a small machine shop, woodworking. I don't cast barrels, but they're readily available online.

I was just wondering about this specific cannon in the photo and if anyone knows anything about it.

Looks a bit like this one ...

I would like to have that 12lb howitzer with a trip fuse and loaded with cannister set up in my garage. Next time some SOB wants to take off with my property.............

My nephew is a hobby craftsman/woodworker. He made a model civil war cannon, used a piece of waterpipe for the bore inside a fake wooden barrel. Put a hole in the base for a firecracker and shot ping pong balls out of it. That thing was a blast.

I've got one that is well done, can shoot billiard balls, etc. I'd sell it for $3000 which is less than I paid but you'd have to pick it up in NE Texas.

There is always one or more cannons of varying size around my shop. The guy I lease from is always building them. Here is the latest..it is in the final stages of completion. The bore is 2 5/8" just the right size for a pop can. This one is for sale but if it's not your cup of tea I am certain he would be happy to build anything.