Diamondhead has introduced a new Polymer Diamond Integrated Sighting System for all modern sporting rifles. This Front & Rear set will mount easily on any Mil Std 1913 Rail, and is molded of an advanced polymer composite for strength, light weight and durability. The accompying photo shows the sight set folded, deployed, and from the rear where you can see the NiteBrite Photoluminescent inserts that can be charged by natural light, or a flashlight for improved low light shooting. The Diamond shaped housings offer quick target acquisition, and fold flat on the rifle when not in use. The metal Front Sight Post offers easy, tool-less elevation adjustment. The Rear unit features same plane, metal, dual short & long range apertures that are the same height as factory A2 sights. Rear sight windage adjustments are accurate to 0.5 MOA. Made in USA, and Lifetime Warranted by Diamondhead.