Holosun 515CM Red Dot HS515CM rail mountNew in unopened packaging Classic Micro Reflex Sight The HS515CM is a 20mm micro optical sight designed for rifle and carbine applications. Features include 7075 Aluminum Housing, Solar Failsafe, Shake Awake, 12 brightness settings, Holosun’s Super LED with up to 50k hours battery life, Multi-Reticle System, QD mount, Kill flash, and Clear Lens Caps.