The WASP Injector Knife is in a league of its own.
The WASP knife uses CO2 cartridges loaded in the handle to inject a payload of compressed gas out of the knife point and into your target.
You're never going to believe what this thing can do to a watermelon.
Watch the video below:
The WASP Injector Knife is made of surgical stainless steel, making it ideal for land or water use. With an optional Max Charge adapter, the knife holds up to 24 grams of pressurized CO2.