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Baroc · January 25th, 2013, 19:38

hey guys, I have a kraken ak (which is pretty much all aftermarket). recently it has started shooting around 300 fps, traditionally it had been around 400 and that's my goal. now I installed a new metal hop up, a new nub, a brand new whole king arms gearbox and a new high speed motor. the gearbox came with a m120 spring. my gun still chrono's around 300 fps... I don't know what the problem could be anymore... any ideas?

January 25th, 2013, 19:38	#1
Baroc Trader rating Join Date: Jun 2006 Location: montreal	Brand new gearbox and spring, shitty fps hey guys, I have a kraken ak (which is pretty much all aftermarket). recently it has started shooting around 300 fps, traditionally it had been around 400 and that's my goal. now I installed a new metal hop up, a new nub, a brand new whole king arms gearbox and a new high speed motor. the gearbox came with a m120 spring. my gun still chrono's around 300 fps... I don't know what the problem could be anymore... any ideas? Last edited by Baroc; January 29th, 2013 at 19:49..