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Product Description
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.
Product Reviews
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Slide locks back. Finally!
Posted by joseph.tomasello@gmail.com on Oct 14th 2019
After trying two other spring companies, my slide finally locks back when I empty my magazine. Great springs for building a speed gun.
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M&P springs
Posted by Ryan on Jul 15th 2019
These are the best springs I’ve found for 140mm M&P magazines
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Superb Products!
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.
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Awesome
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.
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Unequaled
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.
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TTI Extra Power Extended Length Spring
Posted by Unknown on Nov 6th 2017
very pleased,works excellent with mag extension.
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Great product.
Posted by Unknown on Dec 8th 2016
Use these in my Smith&Wesson mags with the extension, work great. 23 rounds!!