Viridian RFX42 Micro Closed Emitter Green Dot Sight - Shield RMSc 21mmx17mm

The Viridian RFX42 is a micro enclosed-emitter green dot reflex sight purpose-built for concealed-carry pistols and compact slides. Built around the popular Shield RMSc footprint, it drops directly onto a wide range of micro-compact handguns and gives everyday-carry shooters a fast, intuitive aiming solution without adding bulk to the slide.

At the heart of the optic is a crisp 3.5 MOA green dot reticle projected through a 21mm x 17mm fully multi-coated aspherical lens, delivering a clean, distortion-free sight picture in any lighting. The closed-emitter housing seals the LED from rain, dust, and pocket debris so the dot stays bright and unobstructed in real-world conditions. Brightness is adjustable across 10 settings, including 2 night-vision compatible levels, and the unit runs on a single CR1620 battery. Eye relief is unlimited, allowing natural sight alignment at any presentation.

The RFX42 is machined from aluminum and finished in matte black for a low-glare, snag-free profile. It measures just 1.60" long by 1.04" tall and weighs only 0.90 oz, making it an exceptionally compact enclosed-emitter optic for daily carry. Rated water resistant, the RFX42 is ready for everyday use in any environment.

The RFX42 pairs the popular Shield RMSc mounting footprint with the durability of a sealed emitter, giving concealed-carry shooters a weather-ready aiming system in a remarkably compact and lightweight package.