LXF1137 Features: * 3 Dot green front and green fixed rear night sight * Self-luminous and provides five times greater night fire accuracy-with the same speed as instinctive shooting * Glass lamps filled with pressurized tritium gas and glow bright green at night * Polished sapphire windows, aluminum cylinders, silicone rubber cushions the glass lamp within the aluminum housing for excellent shock protection * Larger front dot provides extra distinction and brightness * Patented unique shock resistant design * Precision machined and custom manufactured for specific handgun makes and models Construction: * Metal construction Warranty: * Manufacturer provides 12 years warranty against lamp failure