For great value and appreciable power in an ultra-compact white-light, the WML White - Gen 3 is an optimal choice. If youre looking for a bit more, the WMLx White - Gen 3 sets the standard for balancing output, reliability and size in a lightweight rifle light. Both weapon mounted rifle lights are made of glass reinforced nylon. This allows for lightweight yet durable construction. These devices are also impervious to dust, sand, and dirt, and are waterproof to 66 feet. Features : 1100 Lumens 25,000 Candela 20 Meter Waterproof 2 Hour Runtime Rear Facing Non Slip Button Glass Reinforced Nylon Fits Picatinny