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extra power spring
Stock spring shown next to our extra power spring

MPX Extra Power Replacement Spring


Always Enjoy Free Shipping On Orders Of $200

Product Description

Silicon Carbide extra power spring for MPX with +10 basepad.

The extra power spring is designed to enhance feeding and to ensure the bolt locks back when empty.

WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to


Product Reviews

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  1. Very good

    Posted by Unknown on Oct 1st 2019

    Very good

  2. Exicelant quality

    Posted by Bill on Aug 13th 2019

    The spring with the extension work great. The only problem is that the extension is very difficult to remove so the magazine can be cleaned. I had to drill a hole in the bottom of it so the spring could be pushed into the magazine allowing the extension to be removed without bending the spring.
    The only malfunction I have had with my MPX was due to dirty magazines. They need to be dissembled and cleaned.

  3. Love Taran tactical products

    Posted by Nate H. on Feb 15th 2019

    The spring and the coyote Bass plate I bought work flawlessly for my Sig MPX 9 mm definitely buying more

  4. been using these springs for about four years

    Posted by gene the old machinen on Apr 3rd 2018

    great mag springs , last for years undrer normal use


    Posted by Anil "Isaiah" Lalani on Mar 23rd 2018

    Great product !!! im runing these on my TF mag EXT ... lock the bolt back every time

  6. Just what I needed

    Posted by Chris on Sep 28th 2017

    I use these with Taylor Freelance +10 magazine extensions. I have them on two mags and both feed flawlessly. Both mags lock the bolt back when empty and after the last round. I have about 250 rounds and one range trip on them so far. I am very pleased with these springs as the factory springs are shorter and mine wouldn't hold the bolt open.

  7. First match report

    Posted by Herb on Jun 12th 2017

    Springs approximately 1.5" longer than OEM. I guess this is because of the 10 round mag extensions shooters commonly add. Wire gage same diameter (.054") as OEM. Used in practice and PCC match this past weekend - about 200 rounds. Performed perfectly. Original OEM springs had failed to hold bolt open after a year.

  8. You need this!!!

    Posted by on Jun 8th 2017

    I bought three basepads (TTI) and they didn't come with the Power Spring (I purchased thru another vendor). The bolt wouldn't lock back. So a buddy told me I needed these, man. I'm glad I got them. Bolt locks back, good pressure when you load the magazines, and also no feeding issues. Thanks.

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