The CZ Duty 4.0F offers the same dependable full-size, striker-fired 9mm performance as its sister SKU, but adds an external manual safety for shooters who prefer a physical safety switch on their service or defense pistol. Built on a durable black polymer frame, it pairs ergonomic modularity with a reliable 4-inch cold hammer-forged barrel. This model retains the direct-mount optics-ready slide with an adaptable pin system, three interchangeable grip modules, and robust construction. The inclusion of the manual safety gives users an additional layer of control while maintaining the crisp trigger break and clean ergonomics of the Duty platform.Hands-On VerifiedGuns.com Hands-On Review"The CZ Duty delivers a modern modular chassis system backed by legendary CZ ergonomics and striker-fired reliability. Evaluated by the Guns.com editorial team for crisp trigger break, optics-ready slide compatibility, modular grip frame adaptivity, and flat-shooting control."Read The Full Review @media(min-width:576px){div style*="flex-direction:column"{flex-direction:row!important}div style*="width:100%;aspect-ratio"{width:180px!important;min-width:180px!important;height:120px!important;aspect-ratio:auto!important}}