The Steyr Hahn aka Hammer or M1912 was a service pistol in Austria. It shoots a 9mm Steyr cartridge which is similar to a 9x23mm. The pistol has an internal magazine and uses stripper clips to load it similar to a Mauser.

Steyr did make an extended magazine variant.



And during Dickson’s Steyr factory tour he took a picture of a M1912 with a stock.


Below is a photo he took in a Military Museum in Hungary of the M1912 extendend with stock machine pistol.



Iraqveteran has a semi auto version.


  • Edeco

    Somebody should do a fixed-mag pistol again, to shave a few thou off the grip to make an extra-thin pocket gun* or get a true double stack of 50 GI rounds in as small a grip as possible.

    Maybe some states could ban detachable-mag handguns and require fixed mags 😀

    *Kel Tec did this a bit.

    • Preston Brooks

      Could I have some of what you’re smoking? And could I skip the before/after photos?

    • DrewN

      Still probably a faster reload than a revolver for 99% of everybody. You would need a pretty robust bolt hold open though.

    • iksnilol

      Fixed mag pistol would be a great idea. I assume that stripper clips (even en block ones) are far lighter than box magazines and cheaper.

    • Huaba Sepp

      Messing around with a stripper clips in a Self-defence situation? I’ll pass

      • int19h

        The vast majority of self-defense situations don’t require any reloading at all. Which is why so many people happily carry 5-round snubbies.

        • UnrepentantLib

          If you consider the times, many of these would probably have been carried by men on horseback. Cavalry, officers, messengers etc. With a magazine fed pistol you have to retain and store the empty mags. With a stripper clip you load the pistol and discard the clip. One less thing to deal with while trying not to fall off the horse.

          • Huaba Sepp

            Steyr Hahn pistols were great weapons for the time, no doubt. My point was that in a modern pocket gun i prefer reliable reload to a thinner grip.

          • DaveP326

            Considering how the guy in the video loaded his stripper clip fed pistol, how do you do that and still remain mounted and bouncing around on a running horse?

          • UnrepentantLib

            That’s kind of my point. You’re likely to drop things when you’re on horseback. If you drop your last mag, your pistol is useless, even if you’ve got more cartridges (though you could single load, I suppose). With the Steyr, you don’t have to worry about keeping track of mags. As long as you’ve got loaded stripper clips you’re in business. It might be a little more awkward than loading a magazine, but like everything it probably become easier with practice. A minor thing, but it wasn’t a bad design feature for the times.

        • Edeco

          That’s my thinking. Martial use isn’t my department, but stuff I read, and it makes sense, says a defensive shooting will tend to be over in a few shots one way or another, so slow reliads might not be that much of an issue, where the rubber meets the road.

      • SP mclaughlin

        Only if you need self defense from those pesky Allied Powers ruffians.

      • L. Roger Rich

        If you cant get business taken care of in 1o rounds you should not be carrying. A M-16 speed loader clip and loader can re-load pretty fast however. Huaha Sepp. I have one.

    • Tim

      The Grendel .380 had a internal magazine.

      Correct me if I’m wrong, but I believe it was designed by the guy that designed the Kel-Tec PA-3.

      • Edeco

        Yes, scuse me I should have said Grendel dud a fixed mag pocket pistol not Kel Tec. Same guy tho, hero of mine, the John Browning of the 21st Century; George Kellgren

    • Bill

      Yeah they did. My brother had one and it was a jam-a-matic. He also had to have the steel frame insert replaced, can’t remember why.

  • Tony Williams

    “It shoots a 9mm Steyr cartridge which is similar to a 9x23mm”

    The 9 mm Steyr is a 9 x 23. The other historical 9 x 23 cartridge is variously known as the Bergmann-Bayard, Astra, Campo-Giro and Largo. The Steyr and the Largo are not generally interchangeable, although a Spanish Astra pistol was made to handle either of these rounds – and some other 9mm’s as well.

    There is also the modern 9 x 23 Winchester but that is a very different beast with a far greater performance – and chamber pressure. Do not attempt to fire in a Steyr or other historical pistol.

  • Carlos Villarroel

    The 9×23 mm was first used in the “Bergmann-Mars” pistol of 1903,the most powerful of Bergmann’s (Louis Schmeisser designed) pistols. The gun
    was adopted in 1905 by Spanish Army, but Theodore Bergmann was unable to
    deliver the pistols as he subcontracted manufacture to V.C Schilling who
    finally didn’t accept the contract, and so in 1908 he sold manufacturing rights
    to the Belgian firm Societe Anonyme Anciens Establissments Pieper, who marketed the gun as “Bergmann-Bayard”. Pieper fulfilled the Spanish contract of 3.000 pistols, but the quality of Belgian made guns wasn’t very good and the model was never very popular with Spanish military men, but the cartridge was
    considered adequate and maintained in service with next models: Campo Giro mod. 1913 & 1913/16, Astra mod. 1921 and Star mod. Super A.

    The Austro-Hungarian Army adopted its own 9×23 mm cartridge for
    the Steyr M1912 pistol, a combination of old Roth-Krnka models with the Colt (Browning designed) model 1902 cal. .38 ACP (or 9×23 SR), and possibly the 9 mm Steyr was influenced by Colt’s cartridge. In any case 9 Bergmann and 9mm Steyr were dimensionally very similar and differed from the .38 ACP in that they were rimless.

    Astra 400 commercial pistol were adapted to shoot not only the two rimless cartridges but also .38 Auto and even 9 Parabellum (though only in emergencies).

  • Full Name

    “Iraqveteran has a semi auto version.”
    These were all semiauto.

    • Dickson Ly

      The one shown with the extended floor plate and stock in the Hungarian museum display is a machine pistol.

    • Nicholas C

      Nope. There are full auto variants.

  • L. Roger Rich

    I have a i Steyr M1912 n my collection

    • smitty26

      In WW2 the full auto M12 was used by the”regiment Brandenburg”.
      I had one in my collection,seized by the police because no license for it.
      Probably “resting”in the collection of a police officer.

      • L. Roger Rich

        Lucky you didn’t go to prison.

  • Steve Mentis

    These were cheap when they sold them surplus back in the 80’s and were under a hundred bucks. Wish I bought a couple, but with so many different ones on the market at the time I couldn’t afford to buy them all. Maybe when Mr Trump takes office we will get another chance to buy some again along with some others.