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Matrix 160% / M113 Irregular Pitch Airsoft AEG Upgrade Spring (340~400 FPS)

1 Customer Review

by Andrew G. on 11/10/2016
"I just used this spring a few days ago as I just had it installed in my SR25, it shot on average, 350fps. All day as I was playing there were no problems with it. A very good spring by Matrix.