Quote:
Originally Posted by scurvythepirate
Which MP5 model is it?
A new spring would work, but you'll need a new spring guide, shims, 7mm metal bearings etc.
What FPS are you going for?
EDIT: Go to Airsoft Parts .ca
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Quote:
Originally Posted by coachster
effective and easy? systema m120 complete v2 gearbox.
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Stop giving out bad advice.
Especially at the FPS level he wants to be at (350), you don't need anything else than a $10-$20 spring.