Zero Tolerance Knives describes this item as follows:
The strongest production knife on the face of the earth. And that's vital. Because if it comes down to bayonet time, there's no room for compromise. The ZT-9 doesn't. A sturdy S30V stainless steel blade--a full 1/4 inch thick--is paired with Ranger Green G-10 scales. The ZT-9 mounts on the M-16/M-4/AR-15 series of rifles. When mounted, a full six inches of blade extends beyond the muzzle--more than today's standard-issue bayonets. Comes complete with sheath for use as a field knife. A Strider-ZT collaboration.