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S
Sitting Duck
gotta be incorrect labelled spring or something....

Or Ddddddaaaaammmmmmmnnnn you are good - care to write a tutorial or pass on your elite mofo engineering skills ???

Hudson
Hudson
I don't think so, as it was doing 330ish in the previous gearbox.

Annoying as the box was doing 360 when I originally got it!

SeniorSpaz87
SeniorSpaz87
Could be a grease buildup at the front of the chamber. A build up in the front increases FPS, while one in the back decreases it. It all has to do with air seal

Hudson
Hudson
No, it's all clean & tidy. Made sure of it when I had the box apart.

Hudson
Hudson
I imagine it's a case of mis-labelled spring like Duck said, plus the old box not having as good a seal.

Usually with these M90s I get 340-350ish, just surprised me is all!

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