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Matrix M130 235% Irregular Pitch Airsoft AEG Upgrade Spring (430~520 FPS)
by james d. Date Added: Tuesday 02 March, 2010
As expected. I have used 3 different types of Matrix springs so far and they have never failed me
I have used Systema and Guarder. This spring is easier to install and FPS depreciation is less.

Easy to install (PDI length and design)
Made with sturdier material
Doesn't rust
Not overpriced like other brands


Rating: 5 of 5 Stars! [5 of 5 Stars!]
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