Meprolight 901141172: Introducing the Mepro MPO Pro-S a durable and rugged enclosed optic system built to meet the demands of military and law enforcement operations. The Mepro MPO Pro-S represents a significant advancement from Meprolight, engineered to match the legendary durability of the Mepro M21, M22, and M5. It enhances precision and accuracy across multiple firearm styles and calibers. It automatically adapts to any environment. Built to endure direct impacts and operate in the harshest conditions, the MPO Pro-S provides heightened accuracy and an exceptional field of view. Featuring a user selectable 3 segment reticle system (3 MOA dot, 33MOA bullseye, and 33 MOA ring) allowing the shooter to choose how they interact with their optic. RMSc/JPoint footprints. IP67 waterproof.