The CRKT M4™ lightweight model features white bone scales and contrasting black G10 bolsters, hand contoured like a Carson custom. (A LAWKS® safety cannot be fitted with this bolster.) The OutBurst assisted opening mechanism instantly springs the blade fully open after you have opened the blade approximately 30 degrees. M4 models have dual thumb studs for ambidextrous one-hand opening and bronze bearings and lubrous washers at the adjustable blade pivot for smooth, fast action. The razor sharp 3 1/4" 8Cr13MoV stainless steel blade is a high hollow grind drop point with a cool bead blasted finish.