The OKC-3S is manufactured solely by the Ontario Knife Company and identical civilian versions are available for purchase. It bears a resemblance to the Marines' iconic Ka-Bar fighting knife, though it is not fullered. It is larger, thicker and heavier than the M7 although slightly thinner and lighter than the current U.S. Army-issued M9. A sharper point helps penetrate body armor that many modern adversaries wear; while serrations near the handle help improve its function as a utility knife. In one demonstration, a prototype was able to pierce a punching bag covered with aircraft aluminum and a ballistic vest. The entire weapon is designed to be corrosion resistant, and weighs with its sheath. The scabbard and grip are colored to match the Corps' coyote tan gear, compatible with both woodland and desert camouflage. The NATO Stock Number is 1095-01-521-6087.