Please do not build this, please talk to a lawyer if you are considering making this and please follow all your federal, state and local laws.How is this supposed to work? Like a slingshot? Would it actually kill whoever is in front of it if fired or is the barrel too short? Would it blow up in the shooters hand? Would that merely mean the gun can only be fired once or would it also significantly injure the shooter?https://m.youtube.com/watch?v=FYYo-hT1jmA
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>>65157326SPK_10:00Hey, what's up?SPK_10:01This is my pocket.410 shotgun.SPK_10:04That's a 410 shell next to it.SPK_10:06Basically made for under 25 bucks with just a few things from Home Depot.SPK_10:13It only took about an hour to build, give or take the handle.SPK_10:16The stock there is made out of a wooden bookshelf bracket from the lumber department at Home Depot.SPK_10:21Costs about seven bucks.SPK_10:23The barrel and the cap look are about seven bucks each.SPK_10:26A little more couple, couple pennies more.SPK_10:30Those are from the plumbing department.SPK_10:32That's just a basic hose clamp there.SPK_10:34A couple of screws and springs that I had laying around.SPK_10:41Basically pop that down.SPK_10:45That's the firing pin.SPK_10:48That's a little regular average wire nut there with the little Bic pen spring on there and a little machine screw that goes through the cap.SPK_11:00Basically like I said, it was less than $25.SPK_11:05Very easy to build with just a few tools.SPK_11:08Clip that down there, try to screw that.SPK_11:16It's only one shot, but might do the trick for what you need it for.SPK_11:35That's it.SPK_11:35Like I said, a couple of tools and a couple of bucks.SPK_11:38If you're ever in a hurry to get some self defense, this is the way to go.SPK_11:42Bye.
>>65157326>Like a slingshot?That's what it appears. Looks like a really silly design.>would it killNot reliably, the barrel is terribly short, and probably also too large a diameter>would it blow up in the shooters handprobably not, but that is a riskIt's a pretty crappy design and I've seen better workmanship from cub scouts.
>>65157326it might blow up, the brass isn't very strong, but .410 birdshot is pretty forgiving. looks like extension springs provide enough force to set off the primer when the hose clamp is pulled back and released into the firing pin, but they may not, craft built firearms sometimes seem to function but don't actually have enough oomph to fire a round. it would be better if he had used 3/8" black steel pipe with a cap for the barrel, and it looks like it would violate the undetectable firearms act also if unrifled would be an unregistered aow.
>>65157695so the cheapest homemade gun is just 3/4 pipe 12 gauge slam fire? It seems very reliable But how does a 1 inch pipe fit in a 3/4 inch pipe? Isn’t a 1.25 inch pipe too big which could make the firing pin miss the shell ?
To my understanding, this is completely legitimate so long as it is given a serial number
>>65158367Smoothbore pistols are NFA items.>>651583563/4 pipe is used for the barrel, 1in for the breech end. Keep in mind those sizes are nominal, the pipe doesn't actually measure 0.75 or 1.0" inches.
>>65158388>Smoothbore pistols are NFA itemsStymied again by lawmakers that have never shot a gun
>>65158388So a 3/4 pipe fits in a 1 inch pipe?
>>65158408not all of them but generally yes.minor sanding or filing if theres a welding seam inside may be required
>>65158412How do you put a firing pin in the cap? How do you make the pin not break when you fire it? How strong do you have to be to slam the pipes together? What if the fired shell gets stuck inside the pipe? Can you just put a shell in the other side and blow the stuck one out? Will that kind of shot still probably kill someone or would the stuck shell on the other end prevent it or blow up the pipes in your hand?
>>65158408Yes, look at the chart. 3/4" pipe has an outer diameter of 1.05 inches. The inner diameter of 1" pipe will vary depending on the SCH but the most common is SCH40, which has a wall thickness of 0.113. So, that means it's inner diameter is 1.049, right about the same as the OD of 3/4" pipe--close enough that it will fit with just a tiny bit of sanding. If you use thinner wall pipe like SCH 20 then you probably won't have to sand at all.>strength requiredvery little.>what if shell gets stuckpush it out with some kind of rod>Can you just put a shell in the other side and blow the stuck one out?That is super crazy dangerous. Muzzle obstructions are no joke and will even wreck proper factory-made firearms. Pipe shotguns are sketchy to begin with. A shotshell is 10,000 psi, while the kind of pipe we're talking about is rated to a couple hundred. It should blow up in your hand. It doesn't because the shell is smaller than the barrel. This shitty fit means the pressure bleeds way down. But that also means that anything which could increase pressure--like a barrel obstruction--is now extra super dangerous.
>>65158478If you use thinner wall pipe like SCH 20 then you probably won't have to sand at all.So for no sanding both should be thin wall or just one Hypothetically for a fictional book im writing
>>65158485>both should be thin wall or just oneYou can't possibly be this stupid.
>>65158495Let me think The 3/4 inch should be a thin wall because that would make it less thick? But then the 1 inch should be regular wall thickness? Would the 3/4 inch explode?
>>65157326Highpoints are inexpensive, but Higher Points are even more inexpensive
>>65158430you cut a piece of wooden dowel to fit in the cap and drill a hole to seat the nail you are using as a firing pin. only a mm or two of the nail pokes out and shouldn't break too quickly. imagine it taking a little less force than driving a nail with a brick. although there is a very slight risk of a bore obstruction spinning the barrel and shooting the spent case out is s.o.p IF you are fighting, if you're target shooting knock it out with a stick or pry it out with a screwdriver. if shooting buckshot or slugs it will be lethal out to a pretty good range, the pattern/accuracy will suck and have a lower muzzle velocity than a proper barrel but it will still be frighteningly effective.
>>65158931>although there is a very slight risk of a bore obstruction spinning the barrel and shooting the spent case out is s.o.p I understand pretty much everything else but I can’t make sense of this
>>65159010although there is a very slight risk of a bore obstruction, flipping the barrel and shooting the spent case out is s.o.p
>>65159029So the empty fired shell can get stuck in the 3/4 inch pipe? Just bring an extra 3/4 inch pipe to your ffl
>>65159010even a minor blockage in the end of a barrel can cause a factory barrel to burst, it's what causes them to banana peel like in a bugs bunny cartoon. usually caused by accidentally poking the bore into dirt and getting it plugged, the spent case shouldn't have too much friction to overcome being shot out and won't make a perfect seal making it viable in an emergency but shouldn't be done if you are just screwing around. we are talking about treating the barrel pipe as having two chambers, loading it, pumping a shot off, then spinning the barrel around loading a new shell in what was the muzzle without taking the spent case out of what was the chamber and then relying on the next shot firing that case out. s.o.p stands for standard operating procedure.
>>65159031it's just for speed reloads if you're in such dire straights you're defending your life with a pipe gun. you should be able to wiggle a spent case out, but they don't extract nearly as smoothly as they do from a properly sized and polished chamber.
>>65159045>>65159041That makes sense thank you for the explanation I’d be more worried about the firing pin or the wood it’s mounted in breaking or getting bent so it’s not able to hit the shell where it is supposed to
>>65159050The amount sticking out as a firing pin is so minmal it wont bend unless you used utterdogshit as a firing pin like a thumbtack or paperclip.People have done metal washers or other harder materials as the spacer instead of wood.
>>65158367to not violate the nfa or the ufa a gun you make needs to contain detectable metal equal to the control sample of 3.7 oz of stainless steel, be shaped like a gun, rifled and sub 0.50 bore if under 16". it does not require a serial number federally if home made for ones own use. states are starting to vary widely on privately made firearms so check your local laws as well.
