A close look at the SOTAC 558 Holographic Red & Green Dot Sight as Turgay Dansik of Airsoft Pro does a review in this video... "Today I have the SOTAC 558 Red & Green Dot Holo Sight in my hand and we are examining this sight in detail! So, is it really worth buying? Is it useful? You will find the answers in this video! Do you think this sight is worth buying?"