What's good about the F-4 GS is how easy it is to take apart on the field for field stripping. The paint job is pretty cool. The stock Graffiti Barrel is good, but replacing will have to be done sooner or later.
The SEARS!!!! I'm on my 3rd sear since I got it at christmas time. The sears are bad *most of the time* on the earlyier models (1999). The trigger is pretty heavy. Not much besides that.
This gun can make it for years to come as long as you oil it and take care of it. This gun can compete in tournes all stock. It's okay stock. I belive this gun is better than any Spyder or Tippman. I have owned a Shutter Before and traded it for my F-4, I have shot my friends, 98 and 98 custom and *in my mind* the F-4 is a whole lot better. This gun can be the best in he world with a few upgrades like Barrel,Nitro,Nice Regulator. Overall I give it a 9 because of the sears. BUY THIS GUN!!!!!