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Sig P320 / P250 Magazine Floor Plate Updates

Sig just started shipping the new X5 and X-Carry grip shells. We ran a pre-order and started filling those orders last week. A few customers received the grip shells and reached out to us because their 21rd (MAG-MOD-F-9-21) and 17rd (MAG-MOD-F-9-17) magazines wouldn't fit / lock into the grip shells.

We did some checking and realized that Sig is updating the magazine floor plates making the tabs on the sides of the floor plates thinner.

The magazines still use the same part numbers as the old magazines so it is important to pay attention to the floor plate if you're going to be using the mags in a new X5 or X-Carry grip shell.

Below are photos of the different magazines for comparison. The most recent iteration has the round Sig logo with the squared (instead of round) cutout for the the magazine floorplate insert.

The mag on the left below (from my P250) is an older MAG-MOD-F-9-17. The middle is the "first gen" 21rd (MAG-MOD-F-9-21) and the one on the right is the newer "second gen" 21rd mag (MAG-MOD-F-9-21). Note that we're calling those first and second gen but we don't believe Sig is officially giving them generation designations.

P320-Mag-Change-01

P320-Mag-Change-02 P320-Mag-Change-03

The magazine below is the newer style MAG-MOD-F-9-17 with updated design. Behind it is the the older mag.P320-Mag-Change-13

Below is the older style magazine in the X-Carry grip shell. It doesn't seat. Behind it you see the newer style mag with updated floor plate.P320-Mag-Change-12

Below on the left is the older style mag and the newer style mag on the right.P320-Mag-Change-11

Below on the left is the older style mag and the newer style mag on the right. P320-Mag-Change-10

Below is the old style mag.P320-Mag-Change-09

Below is the newer 21rd mag.P320-Mag-Change-08

Below is the newer 21rd mag. P320-Mag-Change-07

Below is the older 21rd mag. P320-Mag-Change-06

Below is the newer 21rd mag with the newer one on the right. P320-Mag-Change-05

Newer mag in the grip on the right and older mag behind on the left.P320-Mag-Change-04

For further comparison, below is a photo of an original P250 magazine floor plate (no tabs). We checked and mags with these floor plates also do not work in the new X-Carry and X-5 grip shells.

Original-P250-Floor-Plate-001 Original-P250-Floor-Plate-002 Original-P250-Floor-Plate-003 In the last week we have received a few MAG-MOD-F-9-17 and MAG-MOD-F-43-14 mags and they have the updated floor plates but the part numbers didn't change so it will make differentiating mixed inventory a bit difficult.

15 thoughts on “Sig P320 / P250 Magazine Floor Plate Updates”

  • James MacDonald
    James MacDonald March 3, 2018 at 10:40 pm

    Are replacement floorplates & retainers available?

    Excellent explanation of differences. Excellent photography.

    Jim

    Reply
    • OCG

      We've got an inquiry into Sig on this. Waiting for a response. If you have mags and need floor plates / inserts, we recommend calling Sig (until we're able to determine if we can buy them).

      Reply
      • Matt

        Ever hear back?

        Reply
        • OCG

          Sig has finally started offering new floor plates. The part number and info is: KIT-MOD-MAG-FLR-PLT-BLK - 798681591862 - FLOOR PLATE, MAGAZINE, FULL SIZE/COMPACT, SNAP, BLK

          Reply
          • John

            Do you have these floor Plates in stock? I would be very interested in purchasing. Thanks

            Reply
            • OCG

              They're out of stock right now but you can sign up for email notifications at http://www.osagecountyguns.com/sig-sauer-kit-mod-mag-flr-plt-blk.html.

              Reply
  • Harley Meiroff
    Harley Meiroff March 30, 2018 at 2:28 pm

    Thanks for the excellent explanation of the P320 floor plate situation. Will a 15 round mag with the updated floor plate function in a full size X frame?
    Thanks

    Reply
    • OCG

      A 15rd mag won't because it is a compact mag. You want a 17rd full size mag - that should fit assuming it has the updated floor plate.

      Reply
  • Ronney Le Compte
    Ronney Le Compte April 7, 2018 at 6:24 am

    To Harley's comment; You should be able to use the 15 round updated floor plate and retainer on your 17 round magazine, so it could be used on the X series firearm, and the Gen1 floor plate and retainer off your 17 round magazine should work on your 15 round compact frames (compact frames do not need the tapered tabs) !

    Reply
  • Taron Young

    Would using a base pad like Taran Tactical on the old mags allow you to use the new x Five grip

    Reply
    • OCG

      We're not familiar with those base pads / floor plates. It would depend on the design and if they have tabs like Sig's older OEM mags.

      Reply
  • Dave

    I just wish Sig would make up their minds about these kind of things and figure all this out before introducing the guns. Who wants to buy a gun and then have to keep updating parts and magazines, grips, upgrades etc. This is nuts!

    Reply
    • OCG

      If you are not changing the grip module to the X-Carry or X5 grip, you're fine and there is no need to change the floor plates.

      Reply
  • John

    Ref. Sig P320 extended magazine floorplates. No updated .40 S&W's Mags can be found in the "new" version (that will fit new X-Carry Grip Module) HOWERVER the 9mm versions (21rnds) are out in the "new" design (will fit the X-Carry grip). Thus, as my X-Carry grip is on my 320 40 S&W cal., I swapped the floor plates of the Factory 9mm extended (21rnds) to my Factory 40 S&W cal. extended (18rnds) and it works! Now Sig needs to release the "new" floor plates to update older version magazines!!

    Reply
    • Rich

      Agree, Would like to convert the grip module 357 full size to the X-5 but I do not see any 40/357 gen 2 mags or base plates for sale?
      Any word on if Sig will produce these?

      Reply
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