I know you all hate me but i need some help!
Listen i understand a lot of you guys are still probably pissed about my last thread, but i apologize for my immature behavior and would like to seek some advice. I just bought a G&G m4 rec from buyairsoft as a build up platform to upgrade. I shoots 320 fps, version 2 gearbox and was wondering, besides an m120 spring and metal bushings what else i would have to put in the gun so that it can tolerate the harder spring? My goal is for it to shoot aprox 425 fps