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JTS-M12AK/EM-12B 10 round steel magazine.

  • Our version of magazines for the JTS-12 shotgun, note that the front contact point is similar to a Vepr-12 to give support.
  • Note the wider taller rear lock up point. This surface contacts a bearing surface inside of the shotgun receiver to hold the magazines forward.
  • Showing the back of the magazine.
  • Image 4
Current Stock:

Product Description


These magazines are based in part on our Saiga-12 and Vepr-12 magazines.

Designed for the best possible function and firm lock up with your JTS-M12 AK shotgun.

These are not compatible with either the Saiga-12 or Vepr-12 as they have been optimized for the JTS-M12 AK for best reliability. 

This magazine does NOT fit the JTS-M12 AR.

We are working on a magazine for that firearm.


10 round magazine with all steel construction with Nitride treated surface for corrosion resistance.

This surface treatment is currently being used as a substitute for industrial hard chroming.

Product Videos

Csspecs JTS-12 10 round magazine (00:28)
We will have a production model of this magazine in a couple months. It is a modified Saiga-12 magazine with a different front catch and different back assembly. Sits significantly firmer in the magazine well compared to any Saiga-12 magazine.
  • Csspecs JTS-12...
    We will have a production model of this magazine in a couple m...
  • JTS 12 fitting.
    I will be redoing this. I have a cold and I am losing my voice...

Warranty Information

30 day return for refund
1 year normal use.

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Product Reviews

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  1. No room for improvement ! 5 Star Review

    Posted by on 5th Dec 2018

    I bought 2 of these some months back and just got 2 more. (On Sale) I have no issues with them. They hold 3 inch magnum #4 buck shot for my JTS 12. Coyote Killers. Really good fit. No issues. For anyone having problems inserting the clip. Lock the bolt open first.

  2. Great function 5 Star Review

    Posted by on 12th Nov 2018

    The design on the clip is pretty great , I had a hard time getting it to lock into the mag chamber but other then that it worked fantastic and didn’t cause any jamming issues. Definitely will not be going back to the 5 round standard mags haha

  3. Bad seating issues with the magazines. 1 Star Review

    Posted by on 9th Nov 2018

    I bought these magazines to try them out in the JTS 12 and the magazines would not seat in the shotgun on the way. Also the the way the shells sit in the magazine too lose. The shells have to much play in the magazine to where it can cause feeding issues. Save your money and stick with the original mags or use the VPR mags for less.

    The magazine requires fitting as is shown in the video on the product page, and also I sent a photo to your email with what I hope are clearer instructions. Basically the distance from the internal stops on the shotgun receiver and the latch mounted on the magazine well are shorter than normal. Not an uncommon event with AK pattern shotguns.
    As for the way the shells are held in the magazine. The shotguns has two large metal guides that firmly hold the ammo from moving side to side while the magazine is in the gun.

    As for using Vepr-12 magazines in the JTS-12AK, I am nearly 100% sure the magazines will NOT stay in the shotgun as they do not have a front catch.

  4. Excellent magazine! 5 Star Review

    Posted by on 29th Sep 2018

    At first I was skeptical about the price, but I bought it anyway. It was a great decision, the magazine feels strong and sturdy. It fits the gun better than the 5 round mag from the manufacturer. I’ve put about 50rounds of slugs and buckshot with this magazine, no feeding issues. My only regret it’s that csspecs didn’t design the whole gun.

  5. Very Happy! 5 Star Review

    Posted by on 10th Aug 2018

    It made sense to order two.They both function flawlessly. Not one single feed or stove pipe in 200 rounds! Actually once since my order 7/18. Awesome! As to the "Almost Perfect" - comment #6. I figured out that if you load the mag while the slide is open it seats just fine - you don't have to lock it in using the mag release switch. Can't wait for a drum.

  6. Jts m12 magazine m 5 Star Review

    Posted by on 3rd Jun 2018

    The magazine work very well if you have a jts m12 you need to get one or more I know I will be getting another one soon thanks csspecs for making a good magazine.

  7. nice mag 4 Star Review

    Posted by on 27th May 2018

    it took a little bit of filing to get the mag to lock into the magazine well. it would be nice if you added a beefier top so it would fit more snug into the well. overall a good mag.

  8. Waaaaay easier with 10 rounds! 5 Star Review

    Posted by on 9th May 2018

    I put about 40 rounds through one of these with no issues at all. Ran super smooth, I'll have to get another one soon. Thanks guys, keep up the good work! If there's ever a drum available, sign me up! Haha

  9. Almost perfect 5 Star Review

    Posted by on 7th Apr 2018

    I am well pleased with the construction of the magazine. After filing it down is sat in my JTS perfectly. I had one jam the first time i shot it, but I havent had another problem since. I would love it if they came out with like a 20rd drum!! Will be buying more

  10. Nice n tight, 5 Star Review

    Posted by on 2nd Apr 2018

    Fits perfect and spring is strong. What else do you need except a multi-pak discount?

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