STI 2011 - 140mm Magazine Kit for Limited / 3-Gun

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140mm STI 2011 Magazine Kit for Limited / 3-Gun

These are some our best sellers for 2011 platform mags. You have a choice of Taran Tactical Spring & Ultra Thin Follower or the Grams Engineering Spring & Follower kit. We are including the facotry STI Gen 2 mag tube bodies and the TTI 4G basepads in this kit.

  • Factory 140mm STI Gen 2 Magazine Tube
  • Taran Tactical 4G basepad
  • 40 S&W with Grams Engineering Spring & Follower (20 Reloadadble / 21 Non-Reloadable)
  • 40 S&W with TTI Spring & Ultra Thin Follower (21 Reloadable / 22 Non-Reloadable)
  • 9mm with Grams Engineering Spring & Follower (22 Reloadadble / 23 Non-Reloadable)
  • 9mm with TTI Spring & Ultra Thin Follower (23 Reloadable / 24 Non-Reloadable)
  • Fits USPSA Mag Gauge

Taran Tactical 4G Basepads

This Patented push pin design is indestructible and will not come off until you are ready to remove it. One Piece construction made from solid aluminum, will not break or come loose, which is essential in the heat of competition. This base pad allows the magazine to be disassembled in seconds with one hand and no tools. You don’t have to worry about losing small parts or specialty tools to disassemble it.

  • 4mm for STI/SPS/Rescomp 140/170mm tubes.
  •  4G2 for all SV 140mm 40S&W old and new style tubes.
  • *4mm (4 the Gauge) is recommended for anyone doing mag tuning who has a USPSA mag gauge.
  •  -The 4mm is angled in the back and will fit the gauge while allowing one extra round over the 3mm. It’s the base pad that all the mag tuners have been waiting for to get that extra edge!
  • - Weighs .4 oz
  • *Remove the metal insert at the bottom before installation*

TTI STI SV Ultra Thin +1 Follower

Our ULTRA THIN +1 follower for STI and SVI mags are compatible with all new production 9mm/38 STI and SVI 140mm tubes with no modifications when used with our 140mm 2011 Spring. Use 4mm Base Pads for STI tubes and 3mm Base Pads for SVI Tubes. MBX magazine tubes will need 7mm Base Pads (Slight fitting required when using MBX tubes). Use our 11 Coil Spring for 140mm Magazines and the 13 Coil Spring for 170mm.

*Designed to lock back with one in the magazine. Will need to grind down slide lock to use all rounds in magazine.

**These magazine kits are assembled from factory parts and may require tuning to work reliably with your pistol.

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1 Review

  • 4
    Awesome but PLEASE READ

    Posted by Phillip Colby on Jul 4th 2019

    Ben Stoeger did a great job with the order and it surprised me when they contacted me about a delay in the base pads and offered a different solution. I was impressed!!! I waited and when finally delivered the followers were popping out of the mag and jamming the gun. The only reason why I didn't give them 5-stars was due to the fact that I realize they are not going to calibrate them but at least send them out to where the followers don't protrude from the top of the magazine. I hope I can calibrate them so that doesn't happen but I am super impressed with Ben Stoeger Pro Shop sales staff and thanks for awesome customer service.