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TTI Ultralight +9 Base Pad For New Sig Sauer MPX 9mm 35 Round "THRiL" Magazines

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$39.99 - $40.99
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TTI Ultralight +9 Base Pad For New Sig Sauer MPX 9mm 35 Round "THRiL" Magazines

$39.99 - $40.99

TTI Ultralight +9 Base Pad For New Sig Sauer MPX 9mm 35 Round "THRiL" Magazines

$39.99 - $40.99

*Not for sale to California and Washington residents. A courtesy email will be sent to CA/WA residents who place an order for a base pad that has the capability of taking a magazine past ten rounds. Ultimately a refund will be issued unless the purchaser is active Law Enforcement. CA/WA civilians can only purchase base pads listed on the following link -

Ultralight +9 Base Pad For New Sig Sauer MPX 35 Round "THRiL" 9mm Magazines

  • Designed to work with Sig Sauer's *NEW* 35 round "THRiL" 9mm magazine
  • Will NOT work with Sig Sauer's 30 round "Lancer" 9mm magazine
  • Overall weight 2.6 oz.
  • Length, 1.93 inches.
  • Height, 2 inches.
  • No Spring required, designed to work in conjunction with OEM spring
  • Patented, proven push-pin design.
  • No tools needed, just push the pin down, slide the base pad onto the magazine and push the pin up to lock the base pad onto the magazine. Easily attaches and detaches from the magazine.
  • No specialty tools, devices, or additional springs required for assembly/disassembly, simply pop off the base pad and remove the insert at the bottom of the spring and slide on the extension.
  • One piece design; no small parts to keep track of.
  • Minimal length addition to allow usage while in a prone position.
  • Holds 44+1 in 9mm.
  • The added weight helps the magazine drop free easier for faster reloads.
  • CNC machined from billet aluminum.
  • Hard anodized.
  • Made in the USA.
  • Designed to work with Sig Sauer's NEW 35rd 9mm Magazine.

The SIG SAUER enhanced factory MPX 35 round magazine is a substantial improvement over the previous factory mags. In addition to 5 extra rounds, these new magazines have increased reliability and durability in a lightweight polymer body. 35 rounds just isn’t enough. Those are rookie numbers, and we’re here to help you kick those numbers up! How does another 9 rounds sound to you? We’re pretty happy with 44 rounds and we know you will be too. Using our patented, proven push-pin design, no tools are necessary for field strip cleaning. The one piece design of the base pad adds just enough weight (2.6oz) to help empty magazines drop free and clear. The shape of our base pad is designed to save weight, and make it easy to grab when you’re going for a fast and consistent reload. Machined out of billet aluminum and hard anodized, we set your durability and longevity concerns to rest. All machining and manufacturing is done in the USA.

  • Best there is.

    Posted by ghost on Feb 2nd 2024

    Top of the line.

  • +9 Base Pad

    Posted by Michael Fukami on Nov 28th 2023

    I live in Illinois, where I can no longer buy extra mags for my MPX, this is a good alternative to add capacity. Fits great and easy to install.

  • Magazine extensions

    Posted by Jim Richards on Aug 29th 2023

    Perfect fit and great finish, performed as good as they look.