Pointman PUG Posted December 14, 2012 Share Posted December 14, 2012 Hi guys (and girls) im looking to build the ultimate m4 based on fire rate. can anyone give me info on gearboxes,shims, bushes etc. im pretty new to airsofting and aeg's,but im a good listener so any advice would be great. money isnt a problem....wifey said I could spend a bit....so im gonna match the cost of her xmas present!!! Link to comment Share on other sites More sharing options...
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