Quote:
Originally Posted by shiftsup
Today I installed the Madbull Ultimate Hop Up into my completely stock CA XM 177 E2. Prior to installation this AEG's FPS was chronied at approximately 330 FPS. With the Ultimate Hop Up Unit installed the FPS was chronied at approximately 400 fps.
Has anyone else experienced this significant increase in muzzle velocity?
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I am going to assume that my LNIB XM had an air seal issue that was causing the 330 fps that was corrected when this new hop up unit was installed. There's no way that two O rings alone are going to make a 20% increase in muzzle velocity.