The z320 xcarry gun-mods come standard with an x series trigger, octane slide with trijicon rmr compatibility, 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 while the slide ports and cuts create a lighter slide allowing the pistol to shoot flatter and maintain sight picture more easily during follow up shots.Frame Finish: BlackAction: Striker FireCaliber: 9mm LugerCapacity: 17+1Grips: Black PolymerSlide Description: Titanium Gray Octane with RMR