The Spyderco Autonomy™ knife was developed in response to a request from the U.S. Coast Guard for a cutting tool that would meet the demanding mission requirements of their rescue swimmers. The result was the original orange-handled Autonomy automatic, which is approved for use by Coast Guard personnel. Specifically designed to be carried in a dedicated pocket in the rescue swimmer’s vest, it had no need for a firing-button safety or pocket clip. However, because of its revolutionary design, there was soon high demand for a version that was suitable for safe pocket carry. That led to an orange-handled Autonomy with a safety and a pocket clip and ultimately an all-black version of the same design with a Diamond-Like Carbon (DLC) blade coating and black-coated hardware. All versions of the Autonomy share the same key features, led by a high-performance blade crafted from ultra-corrosion-resistant H-2 steel. The auto-opening blade is powered by a corrosion-resistant coil spring nested within a removable module. Engineered for end-user maintenance, this patented feature allows the module and spring to be easily removed with the tool in Spyderco’s spring replacement kit without disassembling the entire knife. The open-backed, finger-grooved handle construction includes full stainless steel liners and peel-ply-textured G-10 scales. It houses an oversized firing button powered by a spring that is integral to one of the liners and most versions include a sliding safety to prevent unintentional activation. All the other metal hardware of this remarkable family of automatic knives is also made exclusively from corrosion-resistant, marine grade materials.