Fiber Optics Foldable Iron Sights 45° Offset Flip-up Front and Rear SightsFeatures Machined from extremely light and durable aluminum, Non rust black anodized finish. 45 Offset With Visible Front Red Dot Sight and Rear Green Dot Sight provide the brightest aiming points in low light conditions. Both left handers and right handers could use it freely and easily. 45 Degree Sights with Low Profile Design makes transitioning from optical to iron sights simply. Spring load push button with flip up design, allowing for quick