The Derya DY9Z is a striker-fired, semi-automatic 9mm pistol with a compact 3.5-inch barrel, designed to offer a slim, ergonomic polymer frame suitable for concealed carry and general range use. It uses a black Melonite-finished slide and a colored dyed frame, and feeds from a double-stack metal magazine with a 15-round capacity. The slide is optics-ready with a direct RMSc-compatible mounting interface, and the pistol includes interchangeable backstraps to better fit different hand sizes.