Alway wanted a beehive round but they aren't cheap so I fired up the lathe. This one fire 5 rounds of 22lr by force of a 209 primer. Aluminum body with pressed is barrel liners. The launcher is a registered DD.

Thats cool!!!! How does the 209 primer fire them all?

The primer force pushing the firing pin assembly into the five round. Load five rounds, drop I the retainer plate and firing pin before screwing on the base. The base holds the 209 primer. I used the base of a 410 she'll to hold the primer so I can easily use a new one if the primer pocket wears out.

Video of you shooting it?

i second that a video.

Third on a video. Never heard of such a critter like this. Just what would you use it for????

What do you shoot it out of?

Interesting to say the least? Is it legal?

37mm or 40?

It appears to be a zip gun fired from within a 37mm. Truly a unique "critter".

Whats it for?

Yes its legal when fired out of a registered launcher. It's an NFA weapon and registered with the ATF.
Mine is a 37mm. The only thing available for the 40mm are Chalk rounds if you don't load your own. I just make my own components to load buckshot rounds, caulk rounds, stinger rounds, area burst pyro rounds. All NFA compliant

Are the barrels smooth bore or rifled?

They are rifled