Olight K Open Reflex Optic Black (OSIGHTK)

The Osight K Open Reflex Optic with Replaceable Side‑Loading Battery features a 6 MOA red dot for rapid target acquisition, especially in high‑stress or defensive scenarios. It uses a side‑loading CR1620 battery design that enables quick replacement without removing the optic or losing zero. The optic is built on the RMSc footprint, ensuring broad compatibility with optics‑ready pistol slides. A motion sensor automatically activates the sight upon movement and powers it down after 3 minutes of inactivity to save battery. When voltage drops below 2.2 V, a low‑power indicator triggers a triple flash once per minute. It offers 10 brightness settings (8 for daylight, 2 for night vision) to suit any lighting condition, and its multilayer‑coated optics maximize light transmission and reduce glare. The housing is made of 7075‑T6 aluminum (CNC‑machined) for durability, and the low deck height allows co‑witness with iron sights. The optic also includes a memory function that recalls the last brightness setting upon reactivation, and it is rated IPX6 waterproof.