The Shuty Improved MP-1 3-D Printed 9mm Semiautomatic Pistol

The technology of 3D printing has begun to proliferate in the firearms world, and designs that were once essentially novelty project guns have evolved and been further refined into actual working, shooting firearms of reasonable effectiveness. 3D printed guns have come a very long way from the first 3D printed handgun released by Cody Wilson in May of 2013. 3D-printed AR-15 lower receiver designs have been perfected through new materials selection, dimensions better suited to those materials, and more creative use of 3D printing and other manufacturing techniques. 3D printing has proven suitable for making some basic components of firearms, such as housings, receivers, and furniture, but not others, like fire control groups and, of course, barrels. For those parts, makers turn to existing firearms components, most popularly the AR-15 fire control group, and, in the case of the Shuty MP-1, Glock barrels:

The Shuty design, one of the first 9mm semiautomatic 3D printed firearms I am aware of that doesn’t substantially rely on existing receiver and bolt components, has been refined over the past year to become the MP-1, a relatively compact, easy to build semiautomatic 9mm blowback pistol based on the AR-15. Here it is in test firing:

A pistol like this is a major milestone for the 3D printing firearm world. A relatively small, useful 9mm handgun that can be printed on a machine and assembled with a minimum of other components brings us one step closer to letting yet another genie out of his bottle.

Nathaniel F

Nathaniel is a history enthusiast and firearms hobbyist whose primary interest lies in military small arms technological developments beginning with the smokeless powder era. In addition to contributing to The Firearm Blog, he runs 196,800 Revolutions Per Minute, a blog devoted to modern small arms design and theory. He is also the author of the original web serial Heartblood, which is being updated and edited regularly. He can be reached via email at


  • Justin Roney

    I’m curious as to why he didn’t design it to take, for instance, Glock magazines. Perhaps just to prove you could print magazines as well? Cue the ATF (and all the gun control groups and politicians) trying to make barrels a regulated item in 3, 2, 1…

    • ltulrich

      I was too but then I saw that the mag clicks into the release lever at the rear of the mag. A release that worked with glock mags would be too far forward.

      • Justin Roney

        I could be wrong, but isn’t that a printed lower? It wouldn’t be impossible to design in a mag catch further forward.

        • ltulrich

          Yeah but it would be a long reach without some kind of bar.

    • JamesRPatrick

      He has another version called the Gluty in development that accepts Glock mags.

      • Justin Roney

        Gluty….LMAO! Next we’ll have the Shieluty, the XDutty, Siguty, and the Sluty! Wait, maybe not the last one…

        • Budogunner

          I would expect the final incarnation that accepts Glock mags to be called the “Glutius Maximus”.

          It would be worth it just to watch politicians and journalists have to say it.

          • CountryBoy

            The “Gluteus Maximus”: a super-high capacity magazine, like those used in Hollywood productions, where the user never seems to run out of ammunition and never requires a reload. Typically holding thousands of rounds, yet they are the same external size as the factory magazines.

          • Budogunner

            The “Gluteus Maximus” is bigger on the inside.

            *I have the hardest tone fighting auto-correct over Glutius. I thought my intentional misspelling matched the original “Gluty” suggestion.

    • USMC03Vet

      Suddenly private ownership of lathe machines now banned.

      • noob

        Well if a nation can make a locking doorknob they have the technology to make a firearm, so I guess just get into the doorknob business.

        But then again the last time I went shopping for a doorknob they were all made in China.

  • Lawbob

    I wish people who shoot videos would choose a more appropriate background.

    It’s called contrast ratio. Video cannot capture the same degree of light vs dark as your eyes can. Some cameras are better than others.

    If the subject (gun) is black, then you don’t want a bright (light) background because the ccd or tube (old school) pickup has to choose one or the other if it chooses the dark subject, the light will be washed out.

    If it chooses the bright light background the black (dark) subject will tend toward all black with very little contrast. As we see here in this video.

    Lay a darker (gray) towel on the table, don’t shoot the white wall either.

    Your camera will like you for it. Moreover, we will be able to see your subject.

    Ps I don’t think glock mags fit into ar magwell. Mag catch issues too

    • Most people’s ranges are not set up for the optimum video capture quality…

    • Sianmink

      The pearl-clutchers over on Gizmodo called this ‘terrifying’

      In hindsight maybe they were talking about the video quality.

      • Bucho4Prez

        awe man, beat me too it.

    • Justin Roney

      I just checked, and although it’s a snug fit, my G23 mags do fit in my Spikes lower. If you’re printing a lower, it wouldn’t be a stretch to give a tad more clearance in the mag well and design in a forward mag catch.

    • Scott Tuttle

      reckon he was too busy building a gun from scratch to take video classes 😛

  • Xeno Da Morph

    What is he using for a barrel? A handgun barrel or a blank with a chamber cut???

  • noob

    ArsTechnica reports in their article “New 3D-printed 9mm semi-automatic pistol debuts” by Cyrus Farivar:

    “Derwood told Wired that the Shuty-MP1 isn’t perfect; the plastic around the barrel apparently begins to melt after 18 shots if it’s not allowed to cool.”

    Apparently the H&K G36 could learn a thing or two from the Shuty.

  • Tassiebush

    I reckon magazines could be the most significant single area of benefit from 3d printing. It’s an area where consistency is extremely important and must be replicated. It is also an area where increased sophistication and experimentation are considerably burdensome. But improving this area would yield big results. Imagine the implications of a magazine like the American 180 being a 3d printer file.
    It’d also just be cool if it was a source of replacement mags given the high cost of magazines for a lot of guns.

    • noob

      One word of warning, in the state of NSW it is illegal to have a gunfile without the proper firearms manufacturer’s licence. “Possessing” the file means having it on a computer you own OR even merely the existence of the file on a computer you have access to. This means that if somebody emails you a gunfile from a place where it is legal and it sits unopened in your email you could still be charged. Penalty is 14 years in prison.

      • Evan

        Is that New South Wales, Australia? Your gun laws are beyond absurd.

        • noob

          new south wales, australia

          “Firearms and Weapons Prohibition Legislation Amendment Bill 2015” and “Security Industry Amendment (Regulation of Training Organisations) Bill 2015”.

          I believe that both have since been signed into law.

          Further reading “Ability of Australian law enforcement authorities to eliminate gun-related violence in the community. 9 April 2015. ISBN 978-1-76010-187-9”

          • Budogunner

            They made certain kinds of knowledge illegal there?

            That’s… horrifying.

          • bull

            thought crime…

          • Anonymoose

            The aussies tried to ban the internet like China did, also.

          • Tassiebush

            To be precise our previous govt did want to install a “great firewall” to protect our virtue from internet nasties…

      • Tassiebush

        I have no idea about my area but assume it might be similar although NSW does seem harsher with anything weapon related as a general rule.
        Gee wouldn’t it be ironic if someone emailed those files to the pollies who passed that legislation.

      • Sianmink

        That’s kind of like banning books.

        • Tassiebush

          Hehe you haven’t lived till you get a book seized…

      • Guns from scrap

        So…think any Australian politicians are going to get, Emails?

        • tincankilla

          that would be fun. calling in “gun possession” for a silly email and having the police lock up the entire government would be a trolling grand master prize.

      • Tassiebush

        You know things are crazy when the penalty for having information which you may or may not act on for a purpose that is most likely benign like curiosity can potentially land you in prison for longer than actually killing someone does.

      • Phil Hsueh

        Another senseless anti-gun laws that will absolutely nothing to stop criminals. Unless there’s some kind of spyware built into everybody’s e-mail or computer there’s no way that the police are going to know that somebody has a gunfile unless somebody blabs about it, otherwise it’s going to be one of those after the fact things

        • noob

          The UK and Canada use a system called Cleanfeed. Australia was considering implementing the Cleanfeed system on all ISPs but this was eventually defeated due to a mass popular interest in the Tor network, vpn, I2P, wickr, telegram and darknet technologies that would have resulted in a surveillance arms race. Instead Australia has a 2 year mandatory metadata retention policy on all ISPs as a compromise.

        • noob

          There is also Microsoft PhotoDNA which divides up a photograph and creates a digital signature of the parts. This means that even if you crop or edit the photo it can still be recognized by the software, either in transit over the internet or after your computer has been seized. This principle could be extended to recognising CAD files.

          Alternatively large companies like apple, facebook or google could troll your social media for photos of printed guns or gun-like objects and turn them over for human analysis if supplied with a warrant (or maybe without any warrant at all).

          Microsoft PhotoDNA is currently employed to combat human trafficking and child pornography.

          • AnnPelham

            Encrypt it.

      • Isaac FluffyWolf Rader

        That is evil.
        I LIKE IT.

    • Edeco

      Indeed, as shown by the various mags with negative reviews on Brownells, even single stackers; simple as they are there’s some difficulty getting them dialed-in.

    • USMC03Vet

      You just know the second this tech becomes an affordable alternative firearm manufacturers are going to create smart magazine technology to prevent implementation while touting it as a safety feature.

      • noob

        Just like printer ink cartridges. actually I wonder if that will drive the purchase cost of the firearm down if you have to buy authentic pre-loaded magazines of manufacturer factory ammo to feed it?

        sort of like the gillette razor and blades business model.

        • Tassiebush

          It’s interesting to ponder that since the throw away mag concept has been considered a fair bit but never gets adopted. I’m pretty sure it was considered with the armalite.

          • noob

            actually non-refillable single use magazines with proprietary ammunition could cause legal headaches for reloaders thanks to something called ‘box-wrap patent infringement’:

            “What’s that, you ask? Evidently, it’s when you ignore the terms written on the side of Lexmark printer cartridge box, refilling the cartridge with ink even when the company has designated it ‘single use only.’ According to the Ninth Circuit ruling this week in ACRA v. Lexmark, opening the package means you agree to Lexmark’s wishes. And if you break that agreement, you could face claims under contract and patent law.” – Donna Wentworth

          • JK

            As a practical matter, their action of accepting my money signifies their acceptance of me doing as I see fit with their product. It doesn’t open them up to liability for my actions, as some have tried to claim against firearms manufacturers, but they can no longer determine what happens to that product.

          • Miguel Raton

            Wow, thanks for that info! I guess I’d better have someone else unwrap my inkjet cartridges from now on, so I won’t be liable for any non-binding contracts I never violated! 😉

          • White Knight Leo

            I’m sorry, I sincerely doubt that this will happen.

          • Anonymoose

            G3 and M16 mags were originally supposed to be throwaways, but the German and American armies decided they’d rather reuse them instead. HK actually wanted to sell polymer mags to the Bundeswehr when they adopted the G3 in 1957, but they stuck with the metal mags that were issued with the CETME.

          • Tassiebush

            It seems really logical in some ways to treat mags as pre loaded consumables on an army scale. I guess too in the earlier stripper clip/charger/enbloc clip era they pretty much were that way. I guess it must be cost or a lack of faith in a component made cheap enough to use that way.

      • Tassiebush

        Gosh that’s a diabolical idea!

      • Isaac FluffyWolf Rader

        …That’s even more stupid than smartguns. Correct me – the person who usually just holds guns for the sake of drawing when I get bored or if a guy brings WW2 surplus to the museum and I get to lift a Bren – if I’m wrong, but aren’t most magazines essentially just metal or polymer boxes with springs inside?

        • noob

          well there’s the follower that helps with presenting the bullets and also actuating the last round bolt hold open device in the gun.

          Some “smart” followers were tried out and mentioned on this very blog with either a magnet or a thing like a tape measure with gray code printed on it to give a digital round count, but it turned out to be easier to just make part of the magazine body clear.

          and aren’t printer ink cartridges just a box with ink in it? (I joke, most inkjet print cartridges these days actually include the printhead as an integrated component. The firearms equivalent would be if you bought a MetalStorm gun where the registered firearm was the stock and the “magazines” were barrels loaded with stacked bullets and propellant. in the old days printer ink cartridges just had ink and a place to get pierced but today they have a chip in them to stop your printer from recognizing them when they have printed a certain number of pages)

    • Miguel Raton

      Actually, this has already been tried over on RFC [Rim Fire Central forums.] The guy who ramrod’d the project even went so far as to work w/ Dupont on a new filament alloy that would have the necessary performance to work satisfactorily. Regrettably, it’s still too darn expensive for most folks’ taste/pocketbook, but as the technology matures prices will come down. It’s already cost effective enough for the truly ridiculous box mag prices over $50/ea. But a large pan mag a la’ the Am 180 would require a more expensive 3D printer with a bigger “stage” in the 1st place, so those are still probably cheaper to just buy from the supplier. But for OOP mags? Yeah baby, print me up another!

      • Tassiebush

        That’s interesting. I’ll look it up.
        I guess the cost per mag isn’t really an issue if we look at it from a proliferation perspective rather than a diy project. The common idea of something that takes glock mags in 9mm parabellum is often mentioned in comments on this type of thing but both that ammo and that mag would be scarce anywhere with a significant degree of gun control. This example using a glock barrel has the same problem. Buying the American180 mag would also be a non option in most places. It’s only if it can all be made without recognisable gun parts that it really works as a concept.

  • Edeco

    Cody Wilson is my NRA!

  • Sledgecrowbar

    Seems it would be just as easy to modify the AR lower receiver file to have more of a Glock-lower-style magazine well than to have three separate screw-together assemblies there. I feel like with not more than just thought, you could improve on this design a whole lot as far as simplicity. I still think we need to re-popularize the home mill and lathe for a more immediate return to society’s capability before we either come up with printable polymers that are as strong as steel or affordable laser-sintered-metal 3D printing.

  • Mr. C

    I really think as this technology advances, “normal gun control” will be so useless that even the gun grabbers stop trying, and gun control will slowly mutate into thought control, which is frankly even more terrifying.

  • Tassiebush

    That’s just a govt departments service directory. Please don’t hassle them.

    • JohnSkookum

      Better to involve as many innocent minions of the government as possible. Have you forgotten your Alinsky? Attack and injure individual people, not institutions.

      • Tassiebush

        Haha I hadn’t heard of him till then but from a quick read he comes across as a self important mean spirited ar$ehole going on his tactics.
        But in all seriousness bothering public servants in this fashion here will be detrimental to the pursuit of shooters rights in this country. All it’ll do is ad to our marginalisation.

  • zardoz711

    Doesn’t he know that by holding the pistol by the magazine well he’s “redesigning” it as a foregrip???

    Now he’ll get raided by the BATF!

  • Great_Baldung

    So it’s just that semi-automatic gun that Luty designed – but 3D printed?

    • Darren

      no, it is just luty inspired

  • RickOAA .

    It looks kinda shutty but at least it works.