I have a WE P08 Luger. I love it, but I can never find green gas that is close enough.
http://www.amazon.com/WE-P08-Luger-Airsoft-Blowback/dp/B003AKS5JK
I have the middle one. I didn't actually get it from Amazon. I got it from Bluegrassdiscounts.com or something, and I haven't been able to find it. It was $85.00 there, instead of the $105.00 on amazon.
It has a 15 round clip, shoots at 450 fps, and it's full metal (except the handle grips). It's a beautiful gun, just like the gun it is based off of. Compared a real luger, it is the same size, same weight, and works exactly the same as th real thing.
The sights are adjustable, it has a thing for a strap if you want to add one, you can remove the handles and replace them or paint them. The whole gun comes apart if you remove one piece so you can lube or fix it.
I'm not serious enough to get into actual games, but it would be cool if one day I could. I just need more money.