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JTS-12/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.
Bin L4
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-12 shotgun.

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


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

  1. Emilio 4 Star Review

    Posted by on 9th Jan 2018

    First of all, would buy this product again, very well made.Have not taken to range as of yet. However, both mags required quite a bit of sanding,not only on the magazine catch but also on the sides of the catch assy., to make it fit smoothly in the mag well.

  2. Beefy, but required a lot of filing to fit 3 Star Review

    Posted by on 8th Jan 2018

    Picked up my JTS12 in December 2017. Ordered the magazines in January 2018. Followed the magazine fitting video posted above and by filed down the rear mag catch on both magazines I ordered before they would lock in. One one of the magazines I had to take about about 0.2mm off of the front locking block to get the magazine to release well. Now both mags run flawlessly in the gun.

  3. ggreat product 5 Star Review

    Posted by on 7th Jan 2018

    I bought 2 10 rd mags they fit perfectly no play been through 300 rounds with no mishap 5 stars

  4. AAA service 5 Star Review

    Posted by on 4th Jan 2018

    Awesome product and Great business to buy from, excellent customer service.

  5. Best magazine available 5 Star Review

    Posted by on 3rd Jan 2018

    Have tried several less expensive magazines for the JTS, and nothing comes close to this. Great tight fit with no play, feeds great with everything I've tried, and finish is top notch. This is how all magazines should be made.

  6. Great quality Durable Magazine 5 Star Review

    Posted by on 2nd Dec 2017

    Shotgun at first didn't want to feed and cycle shells from magazine was really worried it was a bad fit or had a defect in the manufacturing. But, as it turns out it was just the gun that needed to have a few rounds put through it to get everything broken in. After the intial mishap the gun and magazine started to cycle perfectly put it through about 200 rds and not a single other feed problem. Very happy with purchase great feel and fit. Not to mention a blast to unload all ten rds in a few seconds.

  7. Built like a tank! A Strong Metal Mag! 5 Star Review

    Posted by on 13th Nov 2017

    Well made (design & fabrication). Flawless function.

    Cost is substantial but reasonable considering what you are getting (a magazine that could outlast the firearm).

  8. best mag for JTS-12 4 Star Review

    Posted by on 8th Nov 2017

    This is the best fitting mag for the JTS-12 also it is the only steel mag, and ten round mag you can get specifically for this shotgun. Fitting the mag is a little strange at first.

  9. Just Got Back from the Range 5 Star Review

    Posted by on 31st Oct 2017

    I purchased 2 of your JTS mags. Upon opening them I found they weren't some cheap plastic crap, these babies are steel. Overall very nicely made. Off to the range. The first couple of times I inserted them they were a little tight, but loosened up with use. Nice fit. My first mag full I rode the bolt with my hand and the first round didn't feed. Corrected, reinserted and let the bolt fly. Went bang 10 times no problems. I put 50 rounds through each mag and had zero problems. Only problem was you can sure go through 100 rounds quick with 10 rounder mags. Thanks for supporting us JTS fans.