Hey Fabzter, since you posted in my thread last time and we are looking at similar types of upgrades I hope you don't mind me also asking a similar question here as to aid the guys helping not to dbl post.
I have an ICS m4 and i upgraded from a 363mm barrel to a 455mm one, I am now looking to put a Element Bore-up kit
http://www.ebairsoft.com/element-bore-p-1072.html and a Lomex M120 spring in there.
http://www.ebairsoft.com/lonex-taiwa...20-p-3065.html
Same question would the ICS M4 R.I.S V.3 motor be good with that spring? (High speed not high torque) and do I need to keep anything else in mind?
Advice and insight much appreciated.