DoubleStar “Mortar Plate” AR-15 Stock

DoubleStar “Mortar Plate” is a minimalistic AR-15 stock, which clamps on the rear of the buffer tube (receiver extension). It is compatible both with mil-spec and commercial buffer tubes. The “Mortar Plate” is machined from a billet 7075-T6 aluminum and is black anodized. The only adjustment you can make is to increase the length of pull by adding recoil pads. Mortar plate also features five (!) QD sling swivel mounting points. The overall length of this stock is 2″.

The stock features a Picatinny rail section on the bottom portion for mounting a monopod. The latter is a somewhat arguable feature to have on such a compact and lightweight stock. I mean lack of any significant adjustability, small size and light weight make me think it is better to have this stock on an SBR or light weight build rather than on a DMR style gun, but then you have a monopod mounting option. Anyway, maybe there is a demand for it. If you can think about a situation where it can be handy, please let us know in the comments.

The DoubleStar “Mortar Plate” is made in the USA and has an MSRP of $64.99.

In case if you are curious what a real mortar plate is, here is a drawing of US M30 mortar, where you can see the base plate. It allows to firmly mount the mortar on the ground and absorb/transfer the recoil.

Hrachya H

Being a lifelong firearms enthusiast, Hrachya always enjoys studying design, technology and history of guns and ammunition. His knowledge of Russian allows him to translate and make Russian/Soviet/Combloc small arms related information available for the English speaking audience.
Should you need to contact him, feel free to shoot him a message at


  • TheNotoriousIUD

    Looks pretty meh to me.

    I mean sure, why not. I guess.

    Why not add some driver fittings to fit those side holes and make it a removable multi tool thing?

    • Rick O’Shay

      I’m with you on that one. That was my first thought in terms of potential. Otherwise, it just strikes me as another entry in the “light as possible” stock market.

      • TheNotoriousIUD

        Or add a handle to tenderize squirrel steaks in the bush.

  • joseph collins

    To attach a pic rail sling swivel…? That’s all I got

    • Drew Coleman

      Are you talking about on the bottom part? That’s for mounting a monopod.

    • LGonDISQUS

      Sounds like a leverage point to jack up your buffer tube, IMO.

  • MadMonkey

    How much does it weigh?

    • MrBrassporkchop

      Yeah it’s pretty pointless if it weighs just as much as a normal light weight stock.

  • Cymond

    Maybe I missed it, but what’s the weight?

    I’m considering SBRing my Glock. It currently has an ENDO adapter, Shockwave Arm Blade, and a cheap folding adapter. The ENDO and folding adapter add so much LOP that I don’t think I need a telescopic stock at all.

    Anyway, a minimum length stock seems ideal.

    • Beju

      I wondered about the weight, too.

      However, if the weight were anything to brag about, they’d probably tell us.

  • Just say’n

    Dang, too bad they didn’t call it an “arm brace”. Would look great on an AR pistol.

  • Andrew

    Just the length of the buffer tube seems like a pretty short length of pull, and no adjustment.

    • Marcus D.

      I looked at it and thought to myself, this is a stock where you can’t use the sights at all, not unless you want one jammed in your eye socket. Even a plastic or aluminum extender (cut to your desired length) would make this a better product. Otherwise it is a joke.

    • Dracon1201

      Strike Ind makes an extended buffer tube that would work pretty well with this.

  • It has a section of rail on it for a laser just in case you have to aim while butt stroking some one.

    Really if you are going minimalist, WTF would you put more weight on it with a rail section?

    PT Barnum would be proud.

  • Devil_Doc

    This would be cool on my hunting rifle AR-10 (weight reduction), but that short LOP would be a serious issue with a scope. Agreed with other posters that it would make more sense as a pistol brace. It would look pretty damn cool on my Scorpion, but it would have to be modified to attach to a pistol buffer tube..

  • Rick Grimes

    Perhaps the name and design is in reference to “mortar clearing”? Ie. Clearing a stuck case by slamming the butt into the ground?

    • Juggernaut

      Yes- that is what I thought when I read the title

  • Wang Chung Tonight
  • Cal S.

    Darn it. Here I was thinking it was going to allow me to fire my AR-15 with a full ballistic arc, replete with correction tables.

    How else am I supposed to use those incendiaries?

  • Hoplopfheil

    Why do I want this?

    • the_duck

      Featureless build in a banned state (no adjustable stock).

      • Hoplopfheil

        No, what I want to know is: why do I personally find it desirable?

        (It’s a rhetorical question)

  • jerry young

    Very minimalistic at least it’s got a Picatinny mount what for I don’t know seems like a strange place to mount a mono pod or bi pod or anything for that matter

  • valorius

    Is that a rail segment on the bottom of the “stock?”

  • valorius

    If you’re going to make a product that’s this unconventional, how do you not release a picture of it installed on a rifle?

  • mazkact


  • Sid Collins

    Laserlyte had pistol bayonets on clearance for $2.50 when I ordered 5 of them. A friend pointed out that the shipping was $12 so I may as well order at least $12 of them. As silly as the pistol bayonet is (and I know it is silly), it only cost $2.50 and is still a knife. I can stab assailants with it.

    This thing is LESS useful than a pistol bayonet… and that is saying something.