Holosun Technologies 509T X2 Red Dot, Multi-Reticle System (MRS) 32 MOA Circle and 2 MOA Dot, 2 MOA Dot, 32 MOA Circle Black, Solar Failsafe, Shake Awake, Black, Titanium, Includes RMR Adapter Plate (Not compatible with ZEV or Shadow Systems) HE509T-RD X2 The HE509T-GR X2 is an enclosed reflex optical sight designed for pistol applications. Features include a Titanium housing, Holosun's Super LED with up to 50k hours battery life, Multi-Reticle System, Solar Failsafe, and Shake Awake. The included 509T RMR adapter plate is not compatible with ZEV or Shadow Systems style RMR interfaces.