The speed of an automatic, in spring-assisted form. Make no compromises to your response time with this Smith & WessonA(R) M&PA(R) OTF 3.5" Knife. Blade pops out the front with just a flick of the finger actuator. Manual retraction is just as easy. Sliding safety protects against any accidental deployment for sound peace-of-mind during your day-to-day missions. AUS-8 high-carbon stainless steel Single-edge 3.5" spear-point blade with black oxide coating Spring-loaded blade release and large finger actuator Aluminum handle Safety lock Glass breaker Pocket clip