Pachmayr Dominator .308 1911 Pistol

It’s fun rediscovering something interesting that you didn’t know existed. Here is the Pachmayr Dominator. It was a conversion kit for 1911 pistols. You remove the slide off your 1911 and replace it with a new barrel and bolt action. Oh and it is chambered in .308. It is a bolt action and due to the size of the round, the Dominator is a single shot pistol.

As you can imagine, shooting this must not be comfortable.

Here is a video I found. icehunter121 shows us what it is like to shoot the Dominator.

I also found a .pdf of the installation instructions for the Dominator.

Nicholas C

Co-Founder of KRISSTALK forums, an owner’s support group and all things KRISS Vector related. Nick found his passion through competitive shooting while living in NY. He participates in USPSA and 3Gun. He loves all things that shoots and flashlights. Really really bright flashlights.

Any questions please email him at


  • Paladin

    Hello wrist injuries.

  • Here are the US Patents for George Hoenig’s design.

  • Darren Hruska

    So, it turns an M1911 into a pseudo XP-100? It looks like a cool “range toy,” but I’m sure it’ll hurt a tiny bit to fire. . .

    • Blake

      Except my uncle’s XP-100 in .221 fireball has manageable recoil, whereas this most certainly does not. In fact it makes full-power 44 magnum loads in my Dad’s big-ass Redhawk look downright tame.

      Also the XP has a scope on it :-).

      This thing would have made more sense chambered in a milder intermediate rifle caliber (30-30, 7.62×39, .223 etc.) but in .308 I don’t really see the point.

      • Darren Hruska

        I wouldn’t doubt that the .221 Fireball is much more tamable. In person, I’ve only seen one XP-100, and that was in the 7mm BR loading (good luck finding ammo for that). I do know the pistol is offered in much more powerful cartridges also (.308 Winchester included).
        But yeah, this would definitely be better in an “intermediate power” rifle cartridge. Whether it’d be a common, uncommon, or proprietary cartridge, any would be better than a “full power” rifle cartridge.

        • iksnilol

          7.62×39 or 300 BLK would be a good idea and would work well with short barrels (9-12 inches) provided that the right loads are used.

  • Laserbait

    That is cool! Is it still made?

  • Fred Johnson

    No muzzle brake in the video. Wow, self inflicted thumb dislocation.

    • Hunter Gray

      Ya, I noticed that too. The one pictured at the top of the page 1) appears to have a heavier barrel (?) and 2) has a muzzle break/flash supressor. The one pictured at the top of the page shouldn’t be nearly as uncomfortable to shoot as the one in the video.

  • An Interested Person

    I`d put a can on that and shoot some subsonic rounds. That would be pretty cool and waaay more comfortable.

    • Cornelius Carroll

      That’s actually not a bad idea

    • Will

      I like that idea. A suppressed pistol firing subsonic 230 gr ammo. If only there was a way to do it with, say, a 5 inch barrel and a semi-automatic action.

      • An Interested Person

        Sounds like a suppressed Desert Eagle may be what you want?

        • Dchil

          .45acp is subsonic and runs 230gr ammo as a standard round.

    • mechamaster

      Love the idea ! Imagine if this available in .300 BLK too. More controllable I think.

      • An Interested Person

        .300 BLK would work too, that would definitely be easier to load just because of the shorter length.

  • Lance

    Like when I shot a .375 Ultra mag its one shot one too much. This will go beyond cool to just plain ouch!!!

    This is not new, new Magnum Research made a 3006 pistol (Mountain Eagle) years ago.

    • iksnilol

      So Magnum Research are trying to outdo the .50 AE by using 30-06?

    • Mystick

      I thought the Mountain Eagle was the .22LR with the composite frame…

  • Secundius

    That’s about as Bullpup as Bullpup can get.

  • hydepark

    Is it just me or does the second shot look like a mean flinch? And while this is a neat item, I think I’ll stick to my Coonan and Desert Eagle. I do like Lance’s idea below also.

  • Acad Ronin

    Agree that it is not a bad idea at all. It should be off-patent by now and if it is, I hope that somebody will start making it again, but in more sensible calibers. There are a lot of single-shot pistol designs out there and this could be competitive with them given a lower price.

  • Brian Fulmer

    I have a Springfield Armory Inc. S.A.S.S. with a 14″ 223 Rem barrel. It’s a single shot break action conversion. They offered barrels in 44 Mag and 308 Win as well as a bunch of other calibers. The base frame mounted action stayed the same, as did the magazine well break-open lever, but you could add all the additional calibers with just a barrel. For >10 years this was the only 223 Rem firearm I owned. Fun and reasonably accurate but not very practical. It did teach me that 16″ is the absolute MINIMUM for 223 Rem barrels, which is why my 20″ guns are my preference.

    The OP conversion is cool as heck, but I bet it was a lot more spendy than the SA Inc. kit.

    • iksnilol

      Hey, another person that prefers 20 inch barrels in .223/5.56mm. Nice, I knew I wasn’t the only one

      • El Duderino

        You’re not, I’m in that club too. If you love 16″ barrels go with 7.62×39.

        • iksnilol

          I will admit I don’t shoot much 5.56/.223, I prefer the 7.62×39 (from a 12.5 inch barrel). Though 5.56 was made for 20 inches thusly I prefer that barrel length if I use it.

  • the good thing about this is that when you run out of ammo, you have a very nice side handle baton! hahaha!

  • Alex Nicolin

    What can be better than busting the wrist and eardrums at the same time

  • Phil Hsueh

    The Dominator would be great for someone looking for a challenge to go boar hunting with. Talk about one shot, one kill, because one shot is all you get and if you don’t kill the boar with that one shot you had better pray that your backup is a good shot or you’re able to run really, really fast.

  • Pizza Bob

    This was developed for the handgun metallic silhouette game. While I didn’t have one of these, I did have an XP100 chambered in .308 Win – full length. It was my unlimited gun and really wasn’t all that uncomfortable to shoot. Course of fire was 40 rounds, usually shot from the reclining Creedmore position (on your back, head raised, gun resting on your outboard ankle bone – the position was more uncomfortable than the recoil). Of course that was 35 years or so, ago. Not sure I’d want to deal with that today.

  • Nimrod

    I recall that there was more than one caliber offered or least there were a number of 1911 single shot conversions made by other companies as well. Going to have to look through some old gun magazines and see what I can come up with.

  • Dilby

    And this is why we can’t have nice things…

  • Bill Richardson

    Can you get that in .50 cal?

    • Back
      in the late 1980s or early 1990s, American Handgunner published photos
      of a fellow who made his own bolt-action kits for the M1911 frame. The
      kicker was that they were chambered in .50 BMG and one of the 20mm
      rounds. Neither one looked at all practical, but that really wasn’t the
      point. There is a picture of the .50 BMG version in this old ARFCOM thread:

      • Bill Richardson

        Thanks… Way too much gun for me… Never thought anything more than a .357 was useful in a handgun. Maybe as a collectible, and guys carrying .44 mags for bear in Alaska might have a legit argument.

  • Fishercat

    That’s pretty similar to a Springfield Armory S.A.S.S. … only the Springfield upper is a break-barrel, with a release that comes out of the bottom of a dummy magazine. I think the barrel is a little thinner in profile also. I have one in .308. It’s unpleasant to shoot, to put it mildly.

    I shot 40 rounds one day, in a spasm of macho idiocy. My wrist swelled and turned purple. Haven’t shot it since.


    would love to try this out

  • BR549

    Why am I envisioning a cracked slide and a fast trip to the emergency room?

    • Mog Grat


      • BR549

        My bad, I meant ….. frame.

  • Alex

    Sig Stabilizing brace anyone?

  • Hank Seiter

    I take particularly joy in seeing these idiotic monstrosities bite the dust. They serve no purpose but to feed some over-the-top fantasy. So I guess that means the .308 Winchester FMJ has yet another reason to be deemed a “cop killer”, this after the XP100 and the Thompson Contender. Sheesh.

  • cargosquid

    um……. ow?

  • Adam

    Used too shoot Metallic Silhouette with one of these in 30-221 Fireball and 22 LR back in the mid 80’s, was great as the upper in Queensland Australia wasnt classed as another handgun (We had/Have extremely strict registration laws)..So it was just a add on for my 1911 IPSC pistol… Awesome thing, very accurate.. But in .308 it stung like a bitch… 7mm Bench Rest was much better..

  • Anon. E Maus

    Say, this thang would be darn neat with some sort of buffer-tube bracket to mount an arm-brace.