The Timney Calvin Elite Series Triggers now feature Carbo Nitride Coating, which allows Timney the opportunity to provide you with the highest quality trigger available anywhere. The thermochemical process simultaneously diffuses nitrogen and carbon into the surface of ferrous metals. This coating is substantially harder than hardened tool steel and increases the long-term wear, provides exceptional corrosion resistance, far surpassing the military salt water corrosion standards and increases lubricity to your trigger. This provides your Timney with a lifetime of smooth edges because Timney understands the importance of, “Every shot counts.”