The First ZEV Handgun Built from Scratch ZEV Technologies designed its all-original O.Z-9 after examining the market and determining that there was a need for a handgun that offered improved balance and enhanced control during firing. The core of each ZEV Technologies O.Z-9 is the company's patent-pending steel receiver, which runs the full length of the pistol and completely integrates the locking block. this all-steel receiver adds several enhancements to the gun. First, the extended rails running the full length of the slide provide twice as much contact surface for the slide rails, which add to the inherent accuracy of the pistol. The channels in the receiver also act as Mfg: Zev Technologies