Optimized for the 9mm caliber, the KC9 inherits those same characteristics, yet is smaller, thinner, and lighter. The KC9 retains 100% 1911 controls and handling characteristics, and makes use of standard 1911 magazines, and standard 1911 grips with the Ed Brown Bobtail cut, which are now a standard offering among major grip makers. Some parts were completely re-designed to take advantage of modern improvements such as the new external extractor, easy-to-change front sight, smaller "Tactical Edge" rear sight, bull barrel, and a flat wire recoil spring system. The re-engineered slide has been shortened to 4", thinned substantially for weight reduction, and includes a unique 7-top custom cut, with special front and rear serrations. A recessed slide stop completes the package, making for the perfect custom 9mm 1911.