Thank you Datawraith
For posting that thread answering which M4 is right.
I also do Apologize for referring you to a certain site. No harm was done and lets leave this in the past.
Yes it was a VFC M4 but i can't remember the model. i guess i'll wait until next week for the airsoft convention that's being held at Siege ,hopefully i can get more questions answered and walk out with a new sport.
Daishi it will have to be AEG merzip merzip for now :-) i don't want to deal with gaskets and gas. not at my level.