SureFire M640U Scout Light Pro 1000 Lumen Ultra High Output LED Weapon Light Black. These Rifle Weapon Lights by SureFire include a low-profile mount that securely attaches to your weapon while taking up minimal space. For reliable activation the SureFire M640U Scout Weapon Light Pro features a Z68 momentary/constant-on push-button. Grab the SureFire M640U Scout Light Pro Gun Light to experience cutting-edge illumination technology that will guide you in the dark. Specifications for SureFire M640U Scout Light Pro 1000 Lumen Ultra High Output LED Weapon Light: Manufacturer: SureFire Light Output: 11300 candela 1000 lumens Bulb Type: LED Battery Type: CR123A Beam Color: White Gun Model: Universal Beam Distance: 213 m Diameter: 1.125 in Housing/Frame Material: Aluminum Weapon Mount Type: Picatinny Length: 5.5 in Weight: 4.4 oz Bezel Diameter: 1.125 in Battery Life: 1.25 hours Weather Resistance: Waterproof Finish: Mil-Spec Hard Anodized Battery Quantity: 2 Condition: New Gun Type: Rifle Mount Type: M-LOK Fabric/Material: Aluminum Attachment Type: Picatinny Features of SureFire M640U Scout Light Pro 1000 Lumen Ultra High Output LED Weapon Light Virtually indestructible ultra-high-output LED generates 1000 lumens of blinding light; produces tactical-level light for 1.25 hours on two 123A batteries Versatile Low-Profile Mount (LPM) allows the user to optimize the light's position relative to the rail TIR lens shapes versatile beam with enough reach and surround light for indoor/CQB and outdoor/medium-to-long-range operations Mil-Spec hard-anodized aluminum body and tempered window make it light rugged durable and combat ready Activation via Z68 momentary/constant-on push-button switching with protective shroud O-ring seals keep out moisture; the Scout Light Pro is IPX7 rated Package Contents: SureFire M640U Scout Light Pro 1000 Lumen Ultra High Output LED Weapon Light Mounting hardware for MIL-STD-1913 and M-LOK rails SureFire M640U-BK-PRO: M640U Scout Light Pro 1000 Lumen Ultra High Output LED Weapon Light Black