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Matrix M150 300% Irregular Pitch Airsoft AEG Upgrade Spring (500~600 FPS)
[SPR-MTX-PDI-300]
$10.00
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.

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

Con:
None

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