Can Cannon

The Can Cannon made by X Products (they make a lot of really cool stuff).
This is an upper receiver modification for an AR-15 that allows the rifle to fire cans, tennis balls, or anything of similar diameter. It uses 5.56 blanks. They also make .308 versions, but you cannot fire cans out of it because the pressure will explode the cans before they even come out.
This was a lot of fun to shoot! Shooting cans out of it resulted in a lot of recoil. In my honest opinion, I think it kicked more than a 12 gauge!
There's a lot you can experiment with this, as it does not only shoot cans!