ZEV Z365 Octane 9MM (P365) From the Manufacturer: The Z365 Micro-Compact gun-mod chambered in 9mm comes standard with the ZEV Octane Slide and RMSC optic cut compatible with the Shield RMSc, SIG Romeo Zero, and Holoson HS407K, PRO Barrel and Zev’s fiber optic Combat Sights. The Octane slide was designed by founder Al Wolf and is the perfect storm of end user driven features. Aggressive slide serrations help with manipulations and create a lighter slide allowing the pistol to shoot flatter and maintain sight picture more easily during follow up shots.