2×30 Enclosed Magnified Red Dot Sight. This fixed 2x enclosed red dot is constructed from durable T6 6061 aluminum, measuring 150mm long with a moderate 270g weight. Equipped with blue coated 30mm objective lens for clear optical performance, it features dual red & green dot reticle to match various lighting environments. Matching flip-up lens caps are included to protect the optics when not in use.