Barska Optics AU11069 Red Laser Pistol and Rifle Sight

Tactical weaver style detachable mount with locking cross bar, equipped with an on-off button, laser sight is made from tough lightweight aluminum. Includes 3 LR-44 Lithium batteries and tools. Description: Red Laser Pistol / Rifle Sight Tube Diameter: 15mm Output Power: 5mW Wavelength: 635-655nm Max Reach Capacity: 500 yds Adjustment Type: Allen wrench Battery Type: LR-44 Lithium 3 batteries included Warranty: Manufacturer 1 Year Limited.