The pricy G3SG1 lowers movement speed considerably but compensates with a higher rate of fire than other sniper rifles.
It has been hand painted with a gruesome display of bone.I always take a trophy - Javier Alviso, Fist of the Phoenix

This skin is available in wear conditions from 14% (Minimal Wear) to 85% (Battle-Scarred).
The values were set by the game development.