The ZEV OZ9 Duty, features the same functionality and modularity of the OZ9 in a configuration optimized for durability without compromising on performance. Built with ZEVs windowless Duty slide, PRO match barrel, and PRO Curved Face Trigger, the OZ9 Duty is tailored to meet the stringent requirements of the discerning professional user. At the heart of the OZ9 is Zev’s patented Steel Receiver. This solid steel frame runs the length of the entire pistol allowing the locking block to be fully integrated. The extended rails in the steel receiver help provide more than double the surface area of contact to the slide. Additional benefits include channels that clear out debris while also acting as lubricating reservoirs for high friction areas.