For 2014, Diamondhead USA has announced its Diamond Back-Up Polymer Sights. These new sights are built with advanced polymer/composite construction for strength, light weight and exceptional durability. As with its previous sights, the new polymer sights will feature the proprietary reference posts and horizon bars that include NiteBrite photoluminescent inserts that require a light source to charge prior to using. The rear sight allows you to select one of three sighting options, with a small aperture for precision shooting, a large aperture for CQB shooting, and the absence of a rear aperture by selecting the flat mid-position for use with the diamond-shaped sight exteriors and photoluminescent inserts, particularly useful in low-light CQB scenarios. These sights are the same plane for both apertures and are at the same exact height as factory A2 sights. For more information, visit diamondhead-usa.com.