GHK AK's Pro-win CNC Hop-up chamber?

[beta678]

Quick question about Prowin's CNC Hop up chamber for GHK AK's, is it worth getting or would it be better to stick with the stock polymer hop-up chamber?

I don't really want to mess around with the internals much as I don't want to throw anything out of whack and they seem to run well stock, but since the hop up chamber isn't a moving part would it be a good idea to replace it or should I just stock up on a few replacement hop up chambers?

Thanks

[airsoftjunky]

I liked my Prowin M4 chamber. Enough that I plan to put it in the rest of my AR based rifles. Can't say much about the AK's though.