SureFire M500LT - Extended-Range Forend LED Weaponlight - 2012 Model (700 Lumens / 1.7 Hours) M500LT-BK-WH Black Virtually indestructible white LED regulated to maximize output and runtime 700 lumen output with beam-focusing Turbohead TIR lens for extended-range capability Secondary LED navigation lights available in white, red and blue Ergonomic switching fully integrated into dedicated forend Construction  High-strength aerospace aluminum with Mil-spec hard anodizing; impact-resistant polymer; coated, tempered window