Our take: The Trilogy Tactical premium 1x32 CombatOptix Perfection-Series ultimate red/green dot scope with 4-intensity brightness adjustment settings is one of the most comprehensive optics solutions for your airsoft gun, for playing in all lighting conditions. It comes complete with an universal weaver rail mount (adjustable), so it easily sits right above your sight/top rail for quick and efficient TA (target aquisition).In airsoft games, where multiple shots might need to get fired off simultaneously with split-second precision at two moving targets actively engaging your location, you MUST have one of the BEST optics in the game or you"ll be a sitting duck. That"s where the Trilogy Tactical 1x32 Red/Green Dot CombatOptix delivers, providing a crystal clear red or green dot, with a pre-set brightness to your liking, as fast as you can aim. The easy to use 4-intensity brightness selector (2 intensities for red dot, 2 intensities for green dot) ensures that no matter the lighting situation, you have optimum target acquisition capability. * One of the BEST parts about the Trilogy Tactical airsoft 1x32 CombatOptix red/green dot sight unit is that it features a BUILT-IN top iron sight. In moments where you need to switch back to an iron sight to take out clusters of enemies without needing the precision of a red or green dot, simply glance up at the integrated iron sights on the scope itself. This is an advanced