Innovative Arms 9mm submachine gun

Here is a 9mm SMG made by Innovative Arms which was built primarily for testing the effectiveness of their suppressor designs on this type of weapon. Like many utilitarian tubeguns It fires from an open-bolt with a fairly high cyclic rate and also accepts 9mm British STEN magazines. It features a sturdy fixed skeleton stock, reminiscent of the folding stock of the Walther MPK. A pistol grip originally for the HK G3 has also been utilized.


Firing video:


  • Peter Nissen

    It seems to look a lot like a Beretta M12!

  • Arie Heath

    Seems like it would be a nice, handy little subgun. However, I would probably prefer to have a folding stock on it.

  • dP

    So it’s possible to make a STEN with the magazine pointing in the correct direction? With the charging handle on the left side? And a G3 grip? Who’d have thunk it!

    If that’s all the innovation they can come up with, they should consider changing their company name…

    • Raginzerker

      They just made it for testing silencers, but I imagine your not smart and didn’t read the article.

      • Duray

        See picture, open mouth.

      • DIR911911 .

        they SAY that . . . and yet there are pictures of 2

        • Matt Taylor

          My thought exactly lol. Pre-production to gauge interest more than likely.

      • dP

        Sarcasm is always lost on comment section tards…

        And btw, look up “arms” in a dictionary. As far as arms go, a suppressor is in the same category as an army field shovel…

        Innovative suppressors perhaps, but the only slightly innovative firearm part on their website is an AR upper with an adjustable gas valve.

  • CanadianShill

    I dig that thing, never been that into those old smg’s either

  • Nandor

    This is nothing more than propaganda to get me to subscribe to their youtube channel. To that I say: ok.

  • Riot

    My mind glossed over the “arms” in the title from the main page and thought “what’s innovative about a German sten with a pistol grip?”

    Hee whoops

  • William Nelson

    I like it for its simplicity. There is sexy in minimalism at times

    • Harry’s Holsters

      There is just something cool about these old sub guns.

  • TheNotoriousIUD

    Hey if it works who cares what it looks like.
    Interesting they chose to post video without the can attached.

  • Nicks87

    Build them in semi-auto with a longer heat shield and barrel (16in) and keep the price around $500 and they would sell like hot cakes.

    • Holdfast_II

      It can’t be just semi-auto – it would have to be closed-bolt, which is basically a re-design of the guts. No point really.

      • Eric S

        And yet, there are semi auto bolt kits for Stens. The only redesign is the bolt and a reduced ID tube. It’s a tube gun, not a G11.

        I’d buy two.

        • Ergo

          make mine 10mm

          • Wetcoaster

            10mm is pretty snappy for straight blowback, isn’t it? Going to be one heavy bolt

          • Ergo

            when 10mm ar15s cost north of 1300 i’ll take a snappy sten clone for 500. 650 if it takes glock mags

    • Cal S.

      We all know it won’t come in under $1,200…

      • Machinegunnertim

        Seems like few companies can produce a new long gun for anything less now days.

      • Kelly Jackson

        I disagree, when those semi auto Sterlings hit the market a few years ago they were in the $500 range.

    • Fox Hunter

      Or as a pistol with a folding sig brace. 500 $ msrp.

  • SP mclaughlin

    That’s a greasy Sten gun.

  • Big Daddy

    I wonder how easily it can be made or something similar in a basement or garage. I carried an M3 Grease gun in the Army and there was not much to it. I used to think hey I can make one of these. thank goodness we don’t have shop classes anymore or the gang bangers would have SMGs.

    • wetcorps

      The hardest part to manufacture yourself would be the barrels and ammo.
      If those aren’t available, you might as well buy an illegal gun.

      • Tom

        The magazine is a problem too which is probable why they went for an existing one.

        Also worth pointing out that whilst those of you across the pound have the right to manufacture your guns this being open bolt would be super illegal even if it was only semi auto.

      • iksnilol

        Magazines are a problem. Rifling isn’t (an SMG doesn’t really need rifling, it is a 100 meters and less gun). Ammo can be made from blanks (even nail gun blanks).

    • Kelly Jackson

      Check out the Luty, people build these things in Australia, well the criminals anyway.

  • Sid Collins

    Okay, so I am supposed to believe the explanation that they had to build a select fire submachine gun only to test their suppressors? They could not find a sub gun easily?

    Just offer the damn gun for sale. I want two.

  • UCSPanther

    They should make semi-auto versions of this as well.

  • J0shua

    This weapon has been teasing me for years. Every so often I stumble upon a post or article or find some pics of it, but I never hear a word about it being produced. I’d even just like some blueprints to look at and consider.

  • roguetechie

    I really like this little gun… Though it’s probably pretty hefty. It probably wouldn’t be all that expensive to crank out a semi auto version for yourself. At the same point, it doesn’t really strike me as a gun that you could manufacture and sell in sufficient quantity to make it worth it.

    It’s very nice though and would make a great test gun for suppressor r and d and testing for QC.

  • greasyjohn

    I like it just as much as the MPL or the M76, but I can’t imagine why anyone would use sten mags. They’re reputedly painful to load and probably harder to find than uzi or sterling mags.

    • DrewN

      I’d just use Glock 33s.

  • Alex Agius

    These would likely sell well had the 86 bs not happened

  • Hossi Blumengaarten

    cool story bro

  • Eric F.

    well, that is a good brass thrower.

  • claymore

    I would never purchase any firearm from a company that makes use of the atrocious Sten gun magazine. They are in the firearms business and pick the worst mag to use??