[L473ncy]

I'm told that between 300mm and 363mm there's no noticeable difference really. However between say a 229mm and a 509mm TBB there supposedly is.

If you want to try it see if you can get your hands on a SCS hop up spacer Beware that it's not really a direct "drop in" upgrade as people say there is a bit of work involved but it should be nothing if you've worked on AEG's before and know the system and how everything works.