Originally Posted by Ninja_En_Short
ICS ? Errr... just the gearbox I have opened on my desk is an insult to the gods of Airsoft and gun doc. And you don't want to piss this guy.
I owned a ICS m4a1 for 3 years (bought in 2005) and maybe 20000 bbs fired and never had any problems with it... Only changes i made were the bushing, spring guide and piston head... didn't even change the piston or spring.