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Matrix 120% / M90 Irregular Pitch Airsoft AEG Upgrade Spring (1J / 280~340 FPS)
by John N. Date Added: March 3, 2013
It's a spring, it does what it does.

Good Material
Irregular pitch; longer durability of the gearbox
Perfect for high speed setups
Consistent decompression; 300FPS almost every shot.

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