CAA CDMAG Countdown AR-15 Magazine is Now Available

CAA has announced the availability of their CDMAG, which is a 30 round AR-15 polymer magazine with round counting capability. The magazine has a small window on the bottom portion of its rear wall, which shows the exact number of the ammunition left in the mag.


The background of numbers is also color coded and changes the color depending on the amount of cartridges. The color coding is for quicker acquisition of the information about remaining ammo in the magazine. The background is green when there are at least 21 rounds in the magazine, it is yellow when  20 to 11 cartridges are left, and it’s red in case of 0 to 10 rounds in the magazine. There is also a viewing port on the floorplate to see the color coding.


The counting system neither reduces the magazine’s capacity, nor it changes the standard disassembly procedure. CDMAG also features a corrosion resistant steel spring and an anti-tilt follower. The magazine weighs 6.7oz, it is 7.48″ long and 2.75″ wide. CDMAG is available through CAA’s website at MSRP of $29.99.

This magazine was designed by SAA back in 2008 and it is only now available for purchase. Below is a video from CAA’s YouTube channel showing the torture tests of the CDMAG:

I think if it is as robust and reliable as shown in the video and if CAA manages to make the price a bit lower, then it can gain huge popularity on the market.

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


  • Geoff Timm

    Something else to go wrong and a solution in search of a problem. Geoff Who is curious, what ever happened to the ammo usage survey from the mid-east? DARPA wanted to know how magazines were used I never saw a result of the study.

  • iksnilol

    So basically the swissobserver but at a sane price?

    Would be nice if they made it as a conversion kit, so you can have the round counter on GI or magpul mags. Also an AK and pistol version would be even nicer.

    • James Young

      A company that comes up with a round counter attachment to Magpul, etc mags will control this market at some point I would think

    • Edeco

      Swiss Observer… sounds like it’d be a bawdy euphemism.

  • junyo

    If you’re going to go with polymer I have to ask what’s wrong with a window, or just going to translucent? You can get Lancer L5AWM’s for less than half, and they have this cool round count ‘if i look at the mag and can’t see bullets that’s when I should reload’ feature.

    • iksnilol

      Yeah, but having a precise counter allows you know exactly how far away from reloading you are.

      • junyo

        As the old saying goes, if you’re not shooting you should be reloading. Do people really run their guns empty, on purpose and outside of a range, on a regular basis? My assumption is that guns get reloaded one of two ways:
        a) Gun is empty, you still need to shoot it, and can’t transition to another weapon
        b) You made gun non-full, don’t need to shoot it right this second, but might need to shortly.

        I’ll take their word for it that you can look at the indicator without breaking your sight picture, which seems like it would be an advantage. But unless you’re down to a last magazine scenario, or you’re doing a sport which artificially limits how many rounds you can carry, is there a practical difference between 5 and 8 rounds when it comes to the still good/reload decision? And even if it does, I’d question the ROI of that advantage over having 2x the mags available, for the same money. And I can get a relatively okay gauge of shots remaining or how many are left in a partial out of regular clear/windowed polymer mag today.

      • Rick O’Shay

        How precise can you really say it is, when the color ranges are limited to groups of ten? I can make a decent enough estimation with a window or translucent mag.

        • iksnilol


          Fur fox sake, does anybody even read these articles anymore? I swear, folks just jump to the comments and bash their heads into the keyboard until they eventually hit the post button.

          • Rick O’Shay

            I must be missing something, because the image I’m seeing shows (from left to right) a green window showing 30-21, a yellow window showing 20-11, and a red window showing 10-0. If it’s showing more precise counters than that, my bad. But that’s as good as I can see it on this phone, with a picture for ants.

          • iksnilol

            Well, there’s numbers as well. The collr coding is just for a rough estimate.

  • TheNotoriousIUD

    It would be cool if they could figure out how to have the number appear in the reticle of a scope/Eotech.

    • iksnilol


      • TheNotoriousIUD

        Dont ask me, man.
        Maybe you input your mag size on the scope and an internal vibration sensor detects recoil and counts the rounds that way….??
        I dont know anything about this stuff.

      • junyo

        Except any kind of wireless means power to the mag. If you were building it like a camera, the chassis has all the power and brains, the attachments are relatively dumb. You’d put circuitry in the mag for round sensing and IO, and a power contact, which matched to something in the magwell. Then when you insert a mag the rifle supplies power, queries the mag for capacity and current round count. The rifle has a IO bridge to the scope and feeds it the current round count to display. Each firing cycle triggers a re-query of the mag, and updates the display.

        • ModelT

          The mag is unpowered. The special follower contains a magnet. When the magnet gets close to the top (empty) the magnetic field gets stronger; indicating an empty clip.

    • Cory C

      That would be great.

    • Ebby123

      Or in a tiny readout below your sights – kind of like the Bubble level on some precision rifle Chassis. You want it in your peripheral vision while using the sights, or looking over the gun searching for targets.

      Like this – but closer to the sights.

      • TheNotoriousIUD

        Thats cool.

      • Tiru Maru

        Now THATS a smart gun I could live with…

  • Tim

    Jebus Chrisp on a cracker…….

  • Cymond

    Weird, I know I have one of these, think I bought it like 3 years ago during the Great Panic.

    • Same here. I’m sure that I didn’t pay $29 for it.

      • Yep, bought two several years ago for about $18 each.

  • Ebby123

    In before the crusty old guys who think everything is a training issue…

  • El Duderino

    Whaddya mean, “only now available for purchase”? I have one I bought years ago. Neat but with ballpit-size bins of $10 Gen2 PMAGs in stores these aren’t worth the extra coin IMO.

  • John

    Should have Green all the way to 14, Yellow all the way to 7, and Red on six or less. That way, you REALLY know.

  • brian

    Bought one years ago…worst pos I ever put in my rifle! …returned it…never again…especially when I can get a window mag or Lancer for half what these guys are charging for a plastic paperweight…