Hi, are you guys familiar with sorbo pads? here in the Philippines, more and more players opt to install sorbo pads on their cylinder head so that impact coming from the piston head won't hurt your gearbox. It serves as shock absorber due to high impact when using stronger springs and high rate-of-fire set-ups (starting with M130 and up).
as for the topic, its a good choice to get a GnP gearbox.
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