This is a custom-designed balisong, commonly known as a butterfly knife. The defining characteristic of this weapon is the fan-like opening of a freely pivoting blade, allowing rapid deployment or concealment. As a result, butterfly knives are outlawed in many countries. It has been painted with black and silver metallic paints using a marbleizing medium, then candy coated in three colors.
The blade is made of many colors, but soon it all looks red
Garry's Mod
Counter-Strike: Global Offensive
Counter-Strike 2
Left 4 Dead 2