Virtually indestructible 500-lumen LED regulated to maximize output and runtime High-visibility 5 mW red laser sight TIR lens for close- to medium-range applications Quick-detach rail clamp with adapters for Picatinny and Universal rails Accepts optional pistol grip and long gun forend switches High-strength aerospace aluminum with Mil-Spec anodizing; impact-resistant polymer; coated tempered window Weatherproof O-ring and gasket sealed Includes high-energy 123A batteries with 10-year shelf life