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Systema M120 Irregular-Pitch Airsoft AEG Power-Up Spring (380~420 FPS)

2 Customer Reviews

by Nick K. on 01/17/2018
"405 fps
407mm 6.03 barrel
great compression
anticipating 400 fps after break in
great spring. right on the money.
by Matthew H. on 03/13/2017
"Great spring I just installed and have almost a perfect air seal and got 390-395 out of my g&g predator.