Refining an original Warren Osborne design, the palm-filling 581-03 Barrage® gets work done with milled Blue Canyon Richlite handle scales, a CPM-S30V stainless steel drop-point blade with flat dark earth anodized thumb studs, and our rapid-release Axis® Assist mechanism with integrated spine safety. When carrying an auto is not an option, pocket this powerful tool. Over time, Richlite®, a paper composite material, will develop a natural patina over time, altering the original color of the material. "Patina” is a natural occurrence in the product that can either darken or lighten depending on exposure to light.