Shoots 18 simultanious .22 rounds through a 40mm grenade launcher

I heard about some hillbillies down in the bayous somewhere while back who came up with a Canister system that could fire 100"s of 5.56 simultaneously. Sounded like some kind of saw and it had been mounted on a swamp buggy.

I will dig around for the story and see if I can find it. There was vid too but I will have to look for it.
I had one of these once but it only fired HE and they wouldn't let me take it home.