Diamondheads DIAMOND "Gas Block" Integrated Sighting System comprises the acclaimed Diamondhead Diamond Rear Sight with the increased height Diamond "Gas Block" Front Sight for AR15 rifles. The patent pending diamond shaped apertures make for faster target aquisition and centering. The twin rear apertures are in the same plane, and they fully deploy and stow no matter which aperture you're using. All standard sight posts are accepted, and the sights clamp securely to any picatinny rail.
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