The Dead Air KeyMicro GOV Flash Hider is a precision-engineered muzzle device designed for 9mm applications with 1/2x28 thread pitch compatibility.Dead Air KeyMicro GOV Flash Hider1/2x28 thread pitch for standard 9mm barrel threading9mm bore diameter for optimal performance17-4 stainless steel construction for durabilityNitride finish for corrosion resistanceProfessional-grade muzzle device designEngineered for reliability and performance this flash hider provides effective muzzle flash reduction while maintaining the precision and quality standards Dead Air is known for in the firearms industry.