The new 581 Barrage is the most awesome assisted knife on the market. Benchmade has improved on a great design by adding an aluminum bolster, a contoured G10 handle, and M390 super steel blade. The 581 still employs the Axis assist mechanism for super fast opening, reversible pocket clip for right or left handed carry, and it has a secondary lock for added security. This is a hot one, we at the Knife Gallery think it is the front runner for knife of the year.