SureFire M900LT &ndash; Ultra-High-Output Vertical Foregrip LED WeaponLight &ndash; 2012 Model (700 Lumens / 1.7 Hours) M900LT-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 vertical foregrip Construction  High-strength aerospace aluminum with Mil-spec hard anodizing; impact-resistant polymer; coated, tempered window