The Meprolight MPO PRO-F Green 3/33 MOA Bullseye Open Pistol Sight delivers the rugged, enclosed durability of Meprolight's legendary M21, M22, and M5 platform in a sleek, low-profile open emitter design built for RMR-footprint pistols. Featuring a user-selectable green reticle with a 3 MOA dot, 33 MOA bullseye, and 33 MOA ring, it offers 12 brightness levels, 2 night vision-compatible settings, Shake Awake technology, and 20,000+ hours of runtime on a single CR1632. At 1.80 oz, IP67 waterproof, MIL-STD-810 validated, and backed by the MEPROGUARD Warranty, the MPO PRO-F Green is built to perform in any condition.