On Orders Of $200
Replacement spring for high-capacity magazines with TTI Firepower Base Pads for M&P.
Designed exclusively to work with TTI base pads. Each coil compresses and stacks into the neighboring coil to provide the highest capacity available in your magazines.
-140 mm spring
*Also compatible with PPQ +5/6 Magazine Extensions.
Posted by Ryan on Jul 15th 2019
These are the best springs I’ve found for 140mm M&P magazines
Posted by Stephen Clabots on Mar 31st 2019
I ordered this pin and set screw set as well as a spare spring for all of my Glock and S&W M&P 2.0 BASE PADS. For the minimal cost, I recommend everyone do the same just to have in your armorers tool box.
Posted by Unknown on Dec 3rd 2018
I uses use these in my hk vp9 mags with +5 mag extensions from hkparts and they last thousands of rounds still locking the slide back.
Posted by JB Creech on Mar 7th 2018
My springs needed replacing, ordered Brownell's springs, then could only load 19rds. Replaced with the correct springs from TTI, 22-23 rds. Don't settle for others, use TTI springs with your TTI basepads.
TTI Extra Power Extended Length Spring
Posted by Unknown on Nov 6th 2017
very pleased,works excellent with mag extension.
Posted by Unknown on Dec 8th 2016
Use these in my Smith&Wesson mags with the extension, work great. 23 rounds!!