Viridian 9810054 RFX11 Black 1 x 16 mm x 22 mm 3 MOA Green DotEyes See Green Better. The RFX 11 is the next in a long line of purpose built, high quality, and highly visible aiming devices from Viridian. Its tiny size is at home on any optics cut concealed carry pistol or as a close range offset sight on your rifle. At a mere 0. 44 ounces, the RFX 11 is one of the lightest reflex sights on the market. Packed with features including a highly visible and efficient Viridian green 3 MOA dot, INSTANT ON and auto shut