Features:

Advanced Polymer construction for strength, lightweight and exceptional durability
NiteBrite - Photoluminescent Inserts (the low-cost alternative to Tritium) - can be charged by natural light or with a flashlight
Spring-loaded sight flips up quickly with the push of a button
Stays up securely and folds down flat
Patented Diamond-shaped Apertures and Upper Housing for fast alignment with any Diamondhead Front Sight
Dual same plane long and short range apertures - at exact same height as factory A2 sights
Defaults to either small or large aperture
Secure and accurate 0.5 MOA windage adjustment

Specifications:

Material: Polymer
Weight: 1.35 oz.
Height: (From rail to top of the sight)

Up: 1.778"
Down: 0.59"

Length:

Up: 1.32"
Down: 2.571"

Width: 1.24"

Compatibility:

Any firearm with Picatinny top rail

Details:

Anyone who has ever tried to shoot a firearm in low-visibility conditions knows how important it is to have highly visible sight posts, but such sights are often very expensive. Fortunately, Diamondhead has developed the Polymer Spring-Loaded Flip-Up Rear Sight with NiteBrite to provide you with excellent visibility at a much lower cost.

This rear sight can be mount on any weapon with a top Picatinny rail. Two NiteBrite inserts to the sides of the aperture help you line up the sights even when ambient light is insufficient. Both the long and short-range apertures feature a diamond shape to help you line it up with the front sight faster.

This rear sight can also be folded down or flipped up in a fraction of a second, making it a perfect backup sight for a scope or red dot. The sight is made from advanced polymers that are exceptionally strong but light as a feather.