Maxim CQB Pistol: PDW Brace for AR15

Perfect for PDW pistols the Maxim Defense Arm Brace gives you the adjustments needed to more comfortably shoot your AR pistol, and makes your pistol more compact for easier transport. Built on the same housing as our CQB stocks, you get the same durability and features. It’s also the perfect stock to run on your pistol while waiting on your Form 1 to clear. When that day comes, keep the same housing installed and simply swap out the arm brace for one of our butt stocks.

SB Tactical Logo
The CQB PDW Brace uses the SB Tactical Pistol Stabilizing Brace®. The ATF recently issued a reversal letter containing a clarification of the Bureau’s position on the lawful use of SB Tactical braces.

ATF Letter

Maxim Defense CQB Install SheetInstallation Sheet



    The Maxim Defense CQB Pistol PDW Brace uses the SB Tactical Arm Brace and easily installs on mil-spec AR15 lowers. Interchangeable with our other Buttstock Assemblies


    18.59 oz.


    7075 Aluminum Alloy housing for optimal performance with QD mounts


    5.375” closed
    6.875” 1st position
    8.375” 2nd position
    9.24” fully extended


    Maxim CQB Buffer in Standard, H1, H2, and Pistol (9mm,40S&W,45ACP) & Spring System (Proprietary buffer & spring)
    JP Silence Capture Spring System – XS (Proprietary & Exclusive to Maxim CQB Stock) ;
    Standard, Heavy, and Pistol (9mm ONLY).

4 reviews for Maxim CQB Pistol: PDW Brace for AR15

  1. 5 out of 5


    Looking at this for a while because of how badass it looked but held off because of the price and I must say that I am glad I finally got one! Workmanship is flawless, collapses the shortest that I’ve seen yet for a pistol brace & did I mention it looks awesome!! I got this coupled with the JP SCS, with my previous buffer I was still trying to dial in function with my favorite rounds and wasn’t quite there yet so when getting this I was ready to order different springs to tune but the “standard” weight that I chose works absolutely flawlessly with every supersonic and sub round I tried so far! All I can say is that if you’re thinking about it just do it, the best isn’t cheap and you won’t regret it.

  2. 5 out of 5

    (verified owner):

    Having designed/produced high quality automotive parts I can really appreciate the EXTREME attention to detail in the very well thought out design & execution. This item is a great example of engineering, with user controls which are beyond intuitive. I ordered my brace in Arid color, the cerekote was perfect, fit was exemplary. I’m running the brace with a standard J&P silent spring on an 8″ barreled .458 SOCOM. Zero issues with SBR 350 grain FMJ rounds, cycles like a dream.

    For .458 shooters I can say that Black Butterfly 300 grain composite (polymer & copper) frangible rounds are slightly underpowered yielding unreliable cycling, but this is due to a weak load not the J&P spring. Just be aware of the loads you’re using in testing, the J&P doesn’t like weak loads.

    The .458 is not a gentle round, especially pushing 350 grain projectiles downrange with powder loads adequate to do so. The setup produces an extremely mild and smooth recoil. It is not violent and acquiring the second sight picture is near instantaneous (also utilizing a linear compensator which assists). From a collapsed state, a simple tug on the brace puts everything where I need it and can confidently place lead on target as fast as is allowable based on my skill. The brace is extremely comfortable, and again, I cannot compliment the production process and product execution enough.

    The price is the reflection of a quality item, I would not hesitate to put one of these on every pistol/rifle I build.

  3. 5 out of 5


    I’m so happy I made the purchase for this brace, so far so good.

  4. 5 out of 5

    (verified owner):

    Brace with H2 buffer arrived earlier than expected. Last piece I needed for my 10.5” 5.56 build. Brace and pistol tested perfectly.
    A great addition to my PDX.

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