Automatic knives are often referred to as switchblades, knives that deploy with an external mechanism like a button or slider push allowing an internal spring to release the blade quickly. There are 2 versions of automatic blades, side opening and OTF (out the front). Whether it's a button or a slide that serves as the opening mechanism, an automatic knife can be very valuable in emergency life and death situations. This is why it is preferred among EMT, Law Enforcement and Military personnel. EKNIVES offers automatic knives to members of the Armed Forces, Government personnel, United States Military, Federal Law Enforcement, Fire Rescue and EMT. Automatic knives are restricted in many states but the laws are changing for the better all the time so be certain to consult your local laws before purchasing these items.