Gen 2 SM9 MPX 35 Round Magazine

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The NEW 9mm  35 Round Generation 2 SM9 MPX Mag for the SIG SAUER MPX® by THRiL features stainless steel feed-lips and superior ergonomics, with an improved follower design and a stability rib on the rear spine. The refined design of this Generation 2 SM9 MPX Mag enhances reliability across a broad range of shooting conditions and ammunitions for the SIG SAUER MPX® and KM models.


  • Capacity : 35rds
  • Caliber : 9X19mm
  • Weight : 4.8 ounces
  • Developed for SIG MPX® Gen II
Features Generation 1 Generation 2
35 Round 9x19mm X X
Enhanced stack geometry X X
Stainless Steel Feed-lips X X
Superior ergonomics X X
Elastomeric strike plate X X
Stability rib on the rear spine   X
Improved follower design   X
Spring redesigned for more linear forces   X
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Gen 2 SM9 MPX 35 Round Magazine

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  • 5
    Gen 2 SM9 MPX magazine

    Posted by DL on 23rd May 2022

    I bought 4 gray ones. They fit a little tighter than the OEM magazines. They have less wiggle in them when in the receivers. I loaded up 35 in all four and I had no issues. I am happy with them. Waiting on Thril to make some more black ones!

  • 5
    Gen 2 MPX 35 Round Magazines

    Posted by Kevin on 23rd May 2022

    These magazines are great! They feel much more sturdy than my factory SIG magazines and operate 100%. Bought a few of these when I first purchased my firearm; shot probably 500 rounds through one magazine with zero malfunctions so I went ahead and purchased 6x more. You can't beat the price and IMO these are the best magazine choice for the MPX.

  • 4
    Exactly as described, nice product.

    Posted by Speed on 9th May 2022

    I’m satisfied with my purchase, I would recommend this product.

  • 5
    Mpx mag

    Posted by Scott on 2nd May 2022

    Fits the mag well snug and feeds reliably. Just like it suppose to.

  • 5

    Posted by Matthew Powers on 26th Apr 2022

    Thril's MPX magazines operate as flawless as the factory magazines and at half the price plus a few extra rounds isn't bad either. Highly recommended.

  • 5
    Great alternative to OEM mags

    Posted by Bill on 26th Apr 2022

    I am so happy that there is finally an alternative to the original equipment magazines for my MPX. These Thril magazines look slick and operate just like the ones that came with my MPX for a fraction of the cost. I've only been to the range once with these, but zero problems.

  • 5
    Gen 2 MPX magazine

    Posted by Blake on 21st Apr 2022


  • 5
    Thril MPX magazines!

    Posted by Robert Lamoureux on 14th Apr 2022

    I own two Sig Sauer MPXs a carbine and pistol! The issue with the MPX was that the only source of Magazines was through Sig (Lancer), although these magazines are good but their price was prohibitive.
    Late last year I found out that a manufacture THRIL was offering their own MPX magazines, I decided to give them a try so bought two! This was a mistake, I should have bought more! Yes, they prove too be awesome. Since I bought these two mags I’ve ran hundreds of rounds through them with no issues period. I found them to be as good as the Sig Sauer magazines that cost twice as much! Another Plus is that they actually look better than the Sigs mags.
    I bought additional five THRIL MPX magazines as soon as they were available last week!

  • 5
    Gen 2 sig mpx magazine

    Posted by John on 27th Dec 2021

    Worked great in my sig mpx 9mm. Only small gripe is that they feel a little tight going in the magazine well. No misfeeds or jams. Perfect alternative to the oem mags at great savings. Highly recommend.