Manufacture ID: 1301Diamondhead's Classic Rear Combat Sight's revolutionary design incorporates traditional Classic round apertures and the Diamond-shaped upper housing. The Classic sight has a very low folded height of 0.435" and is compatible with all Mil. Std. M1913 Picatinny rail systems. Features:- Traditional Classic round apertures and the Diamond-shaped upper housing reference posts and horizon bars- Dual same plane short and long range apertures (at exact same height of factory A2 sights)- Fully deploys and stows with small or large aperture active- Secure and accurate 0.5 MOA windage adjustment- Flips up quickly for rapid deployment- Folds down with the push of a button- Locking system ensures sight stays up securely and remains zeroed in combat situations- Easy installation with proprietary clamping system, providing secure attachment to all Mil. Std 1913 Picatinny Rails- Mil. Spec. stainless steel and Type 111 black anodized 6061 T6 aircraft aluminum construction- Combat Durable
