Staple Gun Four Barreled .410 Handheld Shotgun

Clint Westwood knocks it out the park with this:

A look at the assembly:

I love the ingenuity and workmanship.

If it didn’t require a manufacturer’s license, I guarantee there is a market for stuff like this.  How awesome would it be to have random guns in your safe built from repurposed hardware store tools?

3:35 – That quad-barrel assembly is MEAN!  I like this guy.  I know he was originally going for a “caulking gun” look, but I’d definitely keep that shroud off so it looks like a mini gatling gun haha.

Staple-Gun-Four-Barreled-410-Handheld-ShotgunAnyone else waiting for the ATF is going to come out with an instructional video on manufacturing one of these?  Maybe even a major news station will pick up the story and freak out.

This would be me at Home Depot staple gun shopping.  LOL “Nah man, you go ahead and handle that for me and keep the rest for your time”.  Snoop was always on some G-shit on the wire.

Thoughts?

25 COMMENTS

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STF November 7, 2014 at 06:16 am

This guy needs to work on his fore arm strength.

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Orangejoe November 7, 2014 at 06:24 am

“If it didn’t require a manufacturer’s license, I guarantee there is a market for stuff like this. How awesome would it be to have random guns in your safe built from repurposed hardware store tools?”

What are you talking about? Do you even law, brah?

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STF November 7, 2014 at 06:25 am

I think he’s saying a manufacturers license to sell these.

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Orangejoe November 7, 2014 at 06:35 am

I suppose that is the only way his comment would make sense. But, I don’t see anyone going “wow how cool, I want to buy one”, I see most readers of this blog going “wow , how cool, I would BUILD one”.

Why work on an 80% AR lower to end up with a rifle that looks like every other AR15, when you can make something like this. That is the remarkable thing about the vid, Something BUILT from hardware tools, not ‘something you could buy’.

Thanks for your post.

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ENDO-Mike November 7, 2014 at 11:45 am

I’d have to buy one because I live in a high rise condo therefore don’t have a machine shop. I suppose I could go to a local “maker shop” but I since they mainly consist of hipsters 3D printing and laser cutting hipster stuff I have a feeling making weapons would be frowned upon lol.

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TheBear November 7, 2014 at 01:02 pm

I’d buy one because I’m lazy and would rather spend my time playing Primal Carnage like the dinosaur loving manchild I am.

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ENDO-Mike November 7, 2014 at 11:42 am

He would definitely require one to start manufacturing to sell them.

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jeff November 7, 2014 at 06:58 am

wow made royal nonesuch look like a redneck lol
good job

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TheBear November 7, 2014 at 11:41 am

Royal nonesuch is a kid with a welder and a fixed budget. I’d expect someone with different circumstances to do better.

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dogxhead November 7, 2014 at 07:27 am

STILL a better trigger than a Bushmaster.

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ENDO-Mike November 7, 2014 at 11:46 am

Haha ooooh low blow

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GrillSgt November 7, 2014 at 11:51 am

Yeah, but will it digest .45LC?

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NDS November 7, 2014 at 12:17 pm

I love Royal Nonesuch but damn this guy ain’t playin

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ENDO-Mike November 7, 2014 at 12:24 pm

Word. If royal nonesuch and him teamed up shit would get really real.

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James P November 7, 2014 at 01:17 pm

IMO this design is much more complicated than it needs to be, and not very robust. It appears that upon firing, the barrel assembly would want to slide forward along the long thin rod (the rod is put under tension). The only thing preventing the rod from separating from the gun is the small set screw that is installed at 0:30. I wouldn’t be brave enough to fire one of these.

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Clinton November 7, 2014 at 09:25 pm

I’m not sure I understand the forward forces on the barrel assembly you mention? Gas drag on the barrel after the shot or slug leaves the barrel? If I was concerned about forward forces, I would be worried about thread failure at the front. A .25″ grade 8 bolt will thread fail in excess of 5000 psi with a UNF. I haven’t done the calcs on 1018 cold rolled, but even at 50%? I wouldn’t worry about the set screw. It’s set in a notch and it’s failure mode is in single shear. If it by chance it did fail ahead of the front threads, the rod would pull forward about .5″ and be stopped by the rear brass knob thingie.

And to head off the “blow off my fingers” comments, the barrels are 1045 DOM. The safety factor is X1.5 of the maximum pressure of a .410 shell.

I’ve fired over a hundred rounds and checked for issues, dimensional changes etc. So far the only issue or change is the lighter state of my wallet after buying a hundred rounds.

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James P November 7, 2014 at 09:55 pm

Thanks for the response!

After ignition, while the shot/slug is still in the barrel, the empty case will want to travel backwards relative to the barrel. So the brass head will push against the circular plate directly behind the barrel, and the barrel assembly will want to move forward relative to the rest of the gun. All of that force would be on the long rod/nut/setscrew, not much cross-sectional area there. I just think that there could be a better way to lock the barrel to the receiver before each shot.

Do you have any other documentation for a closer look? Not worried about it blowing up, but I am impressed that things haven’t loosened up after 100 rounds. Very nice machining BTW.

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Clinton November 8, 2014 at 02:38 pm

Interesting. So, if I undo the nut at the business end, and fire a round, the barrel assembly will go flying off in the direction of the target? I’m going to try that and post a video of the results. I love experiments. I’m thinking if the forward forces were anywhere serious enough to stress that rod, the gun would have no recoil. My gut feel is, and I’m not an engineer, is that the mass of the barrel assembly over the short impulse of the aprox 3,5″ that the load has to travel in that very short time span will exert little influence on the barrels. But the proof will be in trying. Right now I’m having a beer and to distracted for math:)

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James P November 8, 2014 at 10:27 pm

“So, if I undo the nut at the business end, and fire a round, the barrel assembly will go flying off in the direction of the target?”
That’s what I would expect to happen, though it probably wouldn’t go very far. I would do that test with a string just in case some gas escapes out of the back of the barrel. Can’t wait to see the video!

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Clinton November 9, 2014 at 06:36 am

Interesting thread. I think one important thing is being overlooked though. As the gas is expanding behind the shot/slug, the shell also expands, making a gas seal and becoming one with the barrel. The movement of the shell as an opposite reaction to the load being accelerated will move the barrel back. I have close tolerances between the shell and barrel and occasionally I need the extractor (stuck in the slide) to remove shell. It’s my understanding that’s the reason for brass being so widely used for shells. It’s elastic enough to expand, seal and then bounce back for extraction. As I mentioned before, I’m not an engineer, but I still abhor the excess use of materials when not needed. The .25″ rod is more than adequate for the job, mainly to load the barrel assembly in tension, act as a pivot and to function as a guide for the slide stuff on top. I still plan on shooting some video proof. Maybe the owner of this site will publish the results.

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James P November 9, 2014 at 09:27 am

https://www.youtube.com/watch?v=YKo06FgXlMM
https://www.youtube.com/watch?v=kHQep9KW0ys

Here are a couple videos of the blow forward action. Ian does a good job explaining the concept.

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jim bob November 7, 2014 at 02:53 pm

glocks Kb, i would be in mortal fear of this thing going VRONK! “…just call me lefty”

maybe i am being a pussy. to quote back to the future, where we’re going we don’t need fingers.

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Taylor November 7, 2014 at 02:53 pm

Lol Endo you should make a few new “builders club” tshirts with this gun and Royal Nonesuch’s stuff…

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Jim in MT November 8, 2014 at 11:15 am

Where in the US Constitution – or constitution of any state – may one find a requirement to have a “manufacturer’s license”? I don’t see it in the “Supreme Law of the Land”, the US one.

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TAOFLEDERMAUS November 8, 2014 at 11:46 am

https://www.youtube.com/watch?v=3-6jimx05MU
Here he is shooting it. Looks like it has a 30lb. trigger pull.

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