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From Home Gunsmith Forum user rhmc24:

Using chambers cut off 12 ga. scrap barrels and a new $10 bbl for an Italian auto shotgun, the only other gun part is a scrapped hammer from a 1857 Remington perc revolver. Loads like a SAA Colt but underlever rotates and cocks it. Blow-by is negligible, hardly noticeable with normal shirt sleeve.

Click through to the forum to see internal shots of the action and read more about how it’s put together. [via Hack a Day]

Sean Michael Ragan

I am descended from 5,000 generations of tool-using primates. Also, I went to college and stuff. I write for MAKE, serve as Technical Editor for MAKE magazine, and develop original DIY content for Make: Projects.


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Comments

  1. James says:

    Too cool! Reminds me of Bioshock with the weapons made by the people of Rapture

  2. Anonymous says:

    Nice hack, but scary. There are reasons the revolving rifle and shotgun never got traction.

    1. Tim Harris says:

      http://world.guns.ru/userfiles/images/shotgun/sh09/protecta.jpg

      It’s a cheap and legal (maybe) version of this. Some states only allow something like 5+1 loaded shell in a gun at any time. Could be less, I am in california.

  3. my only problem with this is the fact that firearms barrels are rigorously pressure-tested at the factory, and shotgun barrels are pretty thin to begin with. i don’t know that i’d trust a revolver cylinder made out of cut-off shotgun barrels to not eventually give out and blow up in the shooter’s face. if you look at the cylinder of a revolver (pistol), you’ll see it’s machined out of one piece of steel, with quite a bit of extra metal left between the chambers. cartridges exert extremely high levels of pressure (20,000psi is pretty normal) when fired, and i’m a little worried that the maker damaged the structural integrity of the metal when he cut down the shotgun barrels to make the chambers. i’ve seen enough guns destroyed from Kb’s (“kabooms”, gun-owner slang for a firearm that catastrophically fails during firing and usually leads to some pretty serious injuries to the shooter), that i probably wouldn’t fire this thing. not only that, but there are plenty of proven repeating shotgun designs that have been around for 100 years that are proven to work extremely well and very efficiently.

    it’s not that i’m not for home gunsmithing: quite the contrary. but when you’re working with weapons that include high-pressure explosive power, you need to be especially careful about what you’re doing. like user Anuran said above, there’s a reason revolving shotguns never really took off, and i really hope i don’t read a report in the future about this thing Kb’ing and sending the maker to the hospital.

    1. Tim Harris says:

      I would agree with you if this were something that shot bullets. However, this does not. It shoots shot. Compared to a regular rifle or handgun, the force per unit area from a shotgun is significantly less as it is distributed over a astronomically larger area (we are talking about a bullet that weighs a few grams and a load of shot that weighs ounces.)

      Remember, Shotgun shells are made of plastic (except the end piece) because they don’t need to withstand enormous pressures that bullets used in handguns do.

      Edit: I do however agree that extreme caution must be used when modifying or building any gun. Peruse some gun building forums for more information.

  4. Capt.tagon says:

    Good for vampire hunting, include some garlic juice in with your shot when you load the cartridges.

  5. joe machinegun says:

    To make one unit i will use tube of a least sae1050, minimum 3/16″ wall, turned internally to size and soldeted with microwire in high precision circle, leaving metal for the position markstep, then heat sterss releaved; in several units situation make lost cerum molding and “steel foundry” .5% Carbon, so will be steel, and het treatment after.