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Matrix M110 150% Irregular Pitch Airsoft AEG Upgrade Spring (330~390 FPS)

2 Customer Reviews

by Paul A. on 06/29/2013
"Great spring, works as expected. I ran it through the chrono with .25s on a high compression setup and got these numbers w/ .25s --- 348,349,351,349,348. Stock motor could pull this, i highly recommend it for instant fps upgrade.
by collin m. on 05/12/2010
"I have purchased 3 of these spring and have received mixed results. I first purchased this spring for my m249 as a slight increase over my m90 so my piston would keep up with the gears, i went from 320fps to 435fps. second I purchased this spring to do an upgrade for a friend, 350fps. third was my most amazing, i got this spring for my RPK which i planed on it shooting 350ish fps. i installed this and i am now getting 470fps. these springs are not good for precise upgrades. however, for how long I have used them they keep their power very well.

good spring, mixed results