I'm looking for a good GBB as a primary and I really like the look of the KSC USP Compact. I've searched online and have found some people loving it, and others having problems with it. The only actual review I could find on it was here: (http://www.arniesairsoft.co.uk/?filnavn=//reviews/ksc_usp_review/ksc_usp_review.htm). It gave it a decent review, but I'm worried about the low fps. I'm looking for some other opinions on this gun. My friend bought a KJW USP Tactical (reviewed here: http://www.airsoftretreat.com/usp_review.asp) and it seems alright, but I don't like the type of plastic its made out of at all. I'm worried that my KSC USP will have the same type of plastic that makes it feel more like a toy. I also hear that there have been some problems with using green gas in the KSC USP. Anyone who owns this weapon or have used it before, I would appreciate some comments before I buy it. Oh, and should I go for a metal slide? I'm worried the added weight may jam it up. PS: Sorry if this is the wrong forum for airsoft, couldn't find a better place to put it.