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
    Best MPX mags I've purchased

    Posted by David C on 29th Jan 2021

    Purchased this mag in grey to test them out compared to the factory mags. This is the better mag! It has a very solid feel and is smoother loading. The texture is spot on and the fit and finish is fantastic. I also like the color options because now my subsonic loads go into the grey mags and standard velocity ammo goes in the black.

  • 5
    MPX mags

    Posted by Steve on 24th Dec 2020

    Work flawlessly in my MPX competition sig. and at a better price, I’ll be ordering more.

  • 5
    Better than Factory Offered

    Posted by JB on 13th Nov 2020

    Up front, I simply love this magazine.
    The ergonomics created with finger grooves allow for easier grip points for reloads that don't slip with sweaty hands. The extra 5 rounds above factory offerings is always a plus. Its the little things with this mag, the rubberized baseplate to prevent deformations during mag changes, the stippling on the finger grip points, even the color offerings.
    I will say I did have a question when I function checked the mags but it was quickly answered but Thril. On a last round bolt hold open the bolt release on the right side will be stiffer than the factory, but when the spring is compressed (even with a single round) this stiffness is non-existent. I've worked with this on the range the other day, at first I didn't like the stiffness on an empty magazine now I love it. Its a small reminder to the operator that the weapon is empty.

    On top of my love for the magazine I can't say enough good things about Thril. The customer service and communication the offered throughout my entire purchase was so far above what I expected from any company. They let me know where they were in product development as things moved along and went above an beyond in taking care of me the customer. I said in an email to them that I would be a returning customer and I'll say it here too. I can't wait to experience their next product.