Bayet13 Posted January 21, 2017 Share Posted January 21, 2017 Just after some advice for my gun. Can the standard gear box cope with a slight stronger spring? If so what can I put in to get closer to the 350fps mark? Currently running 300/310fps only upgrades so far is a madbull tight bore. Link to comment Share on other sites More sharing options...
Guest PT247 Posted January 24, 2017 Share Posted January 24, 2017 Yup, but lose the Madbull (they are more a replacement barrel than an upgrade and are no better than OE for quality) and pop in a Prometheus 6.03 or PDI 6.05 The gearbox will be fine up to around 400fps with no real extra wear. Link to comment Share on other sites More sharing options...
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