The Viridian RFX44 is a compact closed (enclosed) emitter green dot reflex sight built for everyday carry and duty use. The sealed housing keeps dust, lint, and moisture off the emitter and lens so the dot stays clear and reliable where open-emitter optics get blocked - backed by an IPX6 waterproof rating and a 6061 aircraft-grade aluminum body. This package includes a Glock adapter plate for direct mounting on Glock MOS / optic-ready slides. Specifications Reticle: 5 MOA green dot - fast to pick up in daylight and against busy backgrounds Emitter: closed / enclosed design with an oversized viewing window (~25% larger field of view than other compact enclosed optics) Footprint: ACRO-native; ships with a Glock adapter plate (RMR and Picatinny plates available separately) Battery: single CR1632, up to 30,000 hours runtime (top-load) Adjustment: 90 MOA elevation / 60 MOA windage Construction: 6061 aircraft-grade aluminum, IPX6 waterproof Finish: black Green is easier for the human eye to detect than red, so the dot reads faster in bright light and stays crisp against most targets. The enclosed emitter makes the RFX44 a strong choice for a carry or duty pistol that sees real-world dirt and weather. GLOCK is a registered trademark of GLOCK Inc. 3CR Tactical is not affiliated with, endorsed by, or sponsored by GLOCK Inc. Any reference to GLOCK products is for identification and compatibility purposes only.