• +1 Magazine Extension for Smith & Wesson M&P 9 Shield and 40 Shield Pistols
  • +1 Magazine Extension for Smith & Wesson M&P 9 Shield and 40 Shield Pistols
  • +1 Magazine Extension for Smith & Wesson M&P 9 Shield and 40 Shield Pistols
  • +1 Magazine Extension for Smith & Wesson M&P 9 Shield and 40 Shield Pistols
+1 Magazine Extension for Smith & Wesson M&P 9 Shield and 40 Shield Pistols
  • +1 Magazine Extension for Smith & Wesson M&P 9 Shield and 40 Shield Pistols
  • +1 Magazine Extension for Smith & Wesson M&P 9 Shield and 40 Shield Pistols
  • +1 Magazine Extension for Smith & Wesson M&P 9 Shield and 40 Shield Pistols
  • +1 Magazine Extension for Smith & Wesson M&P 9 Shield and 40 Shield Pistols

+1 Magazine Extension for Smith & Wesson M&P 9 Shield and 40 Shield Pistols

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M&P 9 Shield and 40 Shield +1 Magazine Extension

You've asked and now we're answering. Introducing our newest +1 magazine extension for the Shield 7 round factory magazines. Made from carbon fiber reinforced nylon, this economical mag extension is no slouch in the engineering department, with the material being one and half times stronger than aluminum. Not only does the extension add an extra round making the mag a 8 round capacity, it also makes a nice space for your pinky to rest for a better grip. Get yours today!

Installation: Remove the factory base pad and floor plate from the mag tube. Our extension includes a cap on the front top and cap head screw on the bottom front for retention. Remove the cap head screw and cap to allow clearance for the mag tube and shoulders. Replace the floor plate under the mag spring with our new floor plate. While holding the new floor plate and spring up in the mag tube, slide the extension from the front of the extension on the rear of the mag tube to install the extension. Replace the cap on the front top of the extension and then turn the cap head screw clockwise from underneath until the cap is secure (no need to over-tighten, just snug it up). This will block the mag tube to keep the extension from sliding backward. Use a 3/32 allen wrench to make the adjustments.

Magazine not included.

*** Need of an 3/32 Allen Wrench? Please select it from the drop-down before adding the Extension to the cart. If you are ordering more than 1 Extension and need only 1 Allen Wrench please add 1 with an "3/32 Allen Wrench" to the cart and then click the "Continue shopping" button to return to the listing and select "No Allen Wrench" and add the additional quantity of Mag Extensions needed to the cart. Tools are non-refundable. ***

Fits Smith & Wesson M&P 9 Shield and 40 Shield 7 Round Factory Magazines.

As always, proudly made right here in the USA.US Flag

*** A 20% restocking fee will be applied on returned magazine extensions that have been installed and damaged. Non-installed or undamaged parts will receive a full refund (minus shipping). ***

M&P Shield +1 Magazine Extension Installation


This video goes over the +1 Magazine Extension Installation for the Smith & Wesson Shield Pistols.



Specifications

  • Parent SKU
    GP-ME-SHI
  • Brand
    Galloway Precision
  • Country of Origin
    USA
  • Assembly
    Fletcher NC USA
  • Item Condition
    Brand new in original packaging
  • Made from
    Carbon Fiber Reinforced Nylon
    • Weight
      0.3278 oz
    • SKU
      GP-ME-SHI
  • Product class
    Galloway Precision Product
  • Add a 3/32 Allen Wrench
    No Allen Wrench, 3/32nd Allen Wrench
  • Manufacturers
    • Manufacturer
      Galloway Precision

Product questions

  • Douglas
    Apr 6, 2025, 11:53

    I'm looking for the magazine lock that holds the mag in somehow the tooth that locks it is gone so do you have replacement for it

    Administrator
    Apr 7, 2025, 08:36

    Sorry not something we offer, you may try numrich gun parts, they may have some from take apart pistols.

  • David Pitzer
    Dec 12, 2024, 14:31

    Is this compatible with the Samson magwell?

    Administrator
    Dec 12, 2024, 14:48

    We have not tested it with any magwell setups but I would say no, it is designed for use with a stock grip.

  • Hunter
    Oct 16, 2024, 03:47

    Any +2 extensions for the sheiks plus?

    Administrator
    Oct 16, 2024, 09:46

    Sorry no, just this version. We haven't had any requests for a larger capacity version till now. If we get enough interest we will look into it.

  • David Herren
    Jan 30, 2023, 01:14

    How about an extension for a .30 Super Carry Shield Plus? Would this work on that platform!?

    Administrator
    Jan 30, 2023, 11:29

    It is on the production list, I have plans to introduce it soon.

  • MD Davis
    Nov 14, 2022, 19:58

    Will the +1 round extension fit the factory S&W Shield .40 6-round magazine as well as the factory 7-round magazine? Thanks

    Administrator
    Nov 15, 2022, 09:18

    We haven't tried it on that 40 round mag, the extension spacer the longer mag uses may not match up to the extension top since it is meant for the shorter mag.

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  • David Herren
    Feb 5, 2023, 15:52
    Easy to install and gives a sharp look to the gun.

*100% money back (less shipping) on all our products is offered by us against failure of our components or just displeasure our products did not meet your expectations or end needs within the first 30 days. Buy and don't like it, we will refund your purchase price minus shipping upon return, within 30 days of purchase of the complete unmodified parts in question, with the exception of Tool Kits, Tools, Installation Kits, and Closeout products which All Sales are Final. A 20% restocking fee will be applied to returned Triggers, Trigger Kits, Optic Mount Plates, and Guide Rods that have been installed and damaged. Non-installed/non-damaged parts will receive a full refund. If you choose to modify any of our parts without instruction from a Galloway Precision tech, the parts are not eligible for refund or replacement. Refunds are issued upon return within 2 business days back to the original credit card used to purchase the product. We may apply signature required to reduce lost orders for totals over 100.00 or replacement parts or apt addresses.

Despite every effort to provide accurate images of each product’s color and design, actual colors and design may vary slightly, due to different device screen settings, the lighting in the installation location, slight differences in product finishes over time and other factors. Galloway Precision will not accept responsibility for any color or design differences that are not factory faults. When purchasing from Galloway Precision, you agree to accept the small risk that there will be a slight variation between the actual color and design, and the representation on our website. In addition, please be aware that colors and textured finishes often vary between batches; for example slightly different shades of ‘Red’, different degrees of shininess, and different looks and feel for ‘metal/Printed products’ material.

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