Masterpiece Arms DMG Multi Caliber Pistol

MasterPiece Arms is venturing into the “multi-caliber” pistol market with their new “Defender, Machined, Grip” series.  While it has a decidedly 80’s “MAC-10” look to it, the modularity really gives it some flexibility.  I do really like that it accepts a standard Glock Hi-cap magazine.  It will be interesting to see what the consumer adoption of this style of firearm does over the long term.

From the Press Release:

MasterPiece Arms (MPA), manufacturers of the MPA MAC Line of semi-auto pistols, carbines, suppressors and MPAR Rifles, proudly announces the MPA30DMG, the first “multi caliber” pistol from the new DMG (Defender, Machined, Grip) Series. This 9mm pistol is based on the 30sst, but includes a fully machined aluminum pistol grip. The DMG series grip is MPA’s most ergonomically designed grip system allowing the ability to change calibers by changing the grip housing, bolt and barrel (depending upon the caliber).

The 30DMG ships as a 9mm, using a GLOCK® style magazine; however, by changing out the grip housing, bolt and barrel, other calibers can be fired using this modular system. Additional calibers in 5.7x28mm, 9mm, .40 S&W and .357 SIG kits will be available. MPA is working on adding the .45 ACP as a possible caliber and plan to have it developed potentially by SHOT Show 2015.

The MPA30DMG also includes additional upgraded features, such as adjustable front and rear sights, L-Bracket with QD plate for single point sling system and a Cerakote Flat Dark Earth coating. It is also available in Black, Gunmetal, Tungsten and Burnt Bronze Cerakote finishes. The pistol is further equipped with a side cocker, scope mount, lower Picatinny rail for flashlight or laser systems, hammer with disconnect (plus original hammer) and comes in an MPA polymer case.

MPA30DMG Specifications

Caliber: Ships in 9mm (additional calibers to become available)
Barrel Length: 5.5″
Weight: 58 oz.
MSRP: $679.99

Tom is a former Navy Corpsman that spent some time bumbling around the deserts of Iraq with a Marine Recon unit, kicking in tent flaps and harassing sheep. Prior to that he was a paramedic somewhere in DFW, also doing some Executive Protection work between shifts. Now that those exciting days are behind him, he has embraced his inner “Warrior Hippie” and assaults 14er in his sandals and beard, or engages in rucking adventure challenges while consuming craft beer. To fund these adventures, he writes medical software and builds websites and mobile apps. His latest venture is as one of the founders of; a search engine for all things gun related. He hopes that his posts will help you find solid gear that will survive whatever you can throw at it–he is known (in certain circles) for his curse…ahem, ability…to find the breaking point of anything.


  • noob

    finally! an angled grip that isn’t straight up and down on a mac10! does this help with ergonomics too?

  • Tim U

    Maybe interesting if they build an adapter for a sig brace. Otherwise it offers no substantial advantage over a Glock, which you can also get aftermarket caliber conversion to a point.

    • I am who I am

      Not sure why my earlier reply wasn’t allowed through moderation (maybe because I included the link?), but another site stated “MasterPiece Arms makes pistol brace and M4 stock adapters for these pistols, too, for SIG SB 15 arm braces or proper NFA-regulated buttstocks.” FWIW.

      • Tim U

        Well then, this with a pistol brace becomes of interest to me. Very low cost compared to a braced pistol version of the Uzi, sig mpx, or the MP5 clones. Very common magazine usage.

    • Jeff Smith

      It looks as if they sling adapter is mounted on a piece that would accept a buffer tube that could be used for an arm brace.

  • G0rdon_Fr33man

    I´m waiting for the day Desert Tech makes a multi caliber pistol. One can dream, right?

  • jamezb

    Aaaaand MAC gets their long-awaited second wind.

  • john huscio

    Their entry in the modular handgun program?

  • Matt L.

    If MPA’s Sig brace adapter wasn’t so obscenely overpriced, I could totally see one of these as a viable option for somebody who wanted a PDW-sized weapon for less coin than an AR pistol or similar. One of these with an 8-10″ barrel, brace, extended mag, and red dot sight would make for a mean little HD tool.

  • Guest

    Way ahead of you there. =D =D

    300BLK and 762×39 getting shorter barrels is like a stunningly beautiful woman getting a shorter skirt, and not having to file NFA paperwork is pretty much just that girl’s dad telling you she has no curfew.

    …and people say Christmas only comes once a year..

  • jamezb

    i know, but it’s ugly as original sin, LOL

  • floppyscience

    A MAC that takes Glock mags? I know what I want for Christmas.

    What took them so long though?