A great accessory for any pistol or rifle, the Barska Red Laser Pistol/Rifle Sight produces a bright, red dot on your target, giving you increased accuracy and precision. Features a tube diameter of 31mm, a reach capacity of 500 yards, and is powered by three LR-44 Lithium Batteries. Equipped with an on/off button for easy operation. Constructed with tough, lightweight aluminum. Includes three LR-44 Lithium Batteries, tactical weaver style mount, and tools. Protected by Barska's 1-Year Limited Warranty.