ICS M4 spring upgrade or not?
I'm new to this site and the sport. Just bought an ICS M4A1. But was wondering if there is anyone out there who either owns one or has used one that would recommend a spring upgrade? because i know with the functioning forawrd assist knob reverses the gears and loosens the spring for easy storage without dryfire, but ive heard that by upgrading the ICS M4 you would need to dry fire then press the forward assits knob.
Anybody recommend anything?
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