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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. 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).

  2. 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.

  3. 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.