[HavokZA]

Hi there.

I have a ICS M4 RIS and it's pretty cool, however I would like to get a little bit more distance and accuracy with it.
Currently it has a standard 363mm barrel in it.

I was looking at maybe getting the Prometheus 455mm and covering the outer with a Silencer.
Would a longer barrel need a better spring or cylinder head?
Would I see as good gains with the same length barel or would the extra length give a good improvement over the current barrel.

Also would getting a better hop-up (Element) give me a bit of distance/ slight FPS increase and accuracy?

I don't really want to go the spring upgrade path unless it's the only way.

Thanks