Specifications include, but are not limited to: Red dot optics, mounts, and parts shall conform to the design specified herein. The optic dimension when attached to the mount, shall not exceed an overall length of 3 inches, an overall width of 1.7 inches, and an overall height of 3 inches. The minimum size of the optic window shall be 25 mm if circular or 1.1 inches by 0.87 inches if square, and the maximum weight of the optic shall not exceed 6.5 oz. The red dot sight electronics shall be enclosed in a metal alloy housing made from 7075 T6 forged aluminum or titanium. The red dot optic shall have multiple layers of a matte black weather, corrosion, and chemical resistant, finish. The optic must have power, brightness, windage and elevation adjustments on the outside of the housing that are easy to adjust. The optic shall have both a dot and circle dot option. The dot shall be red in color and no larger than 2 Minute of Angle (MOA) with an outer red ring/circle no larger than 68 MOA. The optic must be able to switch from dot only to circle dot without the need to re-zero. The optic must have a minimum of 8 brightness settings and the illumination source shall be LED. The reticle must be within a closed emitter and the lenses must be multicoated, parallax free, and have unlimited eye relief.
