The Viridian 9810109 RFX44 Compact Closed Emitter Green Dot Sight offers a compact, reliable reflex sight solution with a 5 MOA green dot, designed for ACRO/Glock MOS footprints and a black 1 x 21 mm x 16.5 mm objective assembly. This green dot sight delivers quick target acquisition and precise aiming with a 1X power configuration and a closed emitter design that helps protect the aperture from debris while delivering sustained performance in dynamic shooting scenarios. With an objective size of 44 mm and a versatile 5 MOA reticle, the RFX44 provides an easy-to-see aiming reference suitable for pistols and platforms that utilize the ACRO/Glock MOS mounting system, ensuring a secure fit and zero retention under recoil. The compact footprint and durable construction make it an ideal choice for fast-handling handguns, competition pistols, and carry configurations where a lightweight, reliable non-magnified optic is preferred. Engineered to balance clear sight picture with rugged performance, this Viridian reflex sight emphasizes fast acquisition, consistent dot visibility, and compatibility across a range of duty and recreational applications, delivering a practical, ready-to-use aiming solution for proficient shooters.