The SMS is the smallest, lightest and toughest mini reflex sight for military, law enforcement and sporting arms and has seen use in organizations like the British Army and Special Forces as well as special operations units operating under the US, Australia, New Zealand and other NATO countries. After a 20-year legacy, the SMS2 carries the torch with a reinforced housing and the choice of the classic hard-dipped acrylic lens or a crystal-clear glass lens. Like the original, the SMS2 retains the IP67 waterproof rating along with the 20,000-hour operational life on a single CR2032 battery and continues to use the same SMS mounting footprint ensuring compatibility with existing firearms. This model comes in the classic hard-dipped acrylic lens configuration and features an all-black color pattern and a 8 MOA red dot reticle. One CR2032 battery is included. This model comes in a glass lens configuration and features an all-black color pattern and an 8 MOA red dot reticle. One CR2032 battery is included.