This review details the Holosun 509T X2 enclosed emitter pistol optic. Key features include a Grade 5 titanium housing, nitrogen purging, and a closed emitter design. It offers multiple reticle options (2 MOA dot, 32 MOA circle, or circle dot) and boasts a 50,000-hour battery life for the dot-only reticle. The optic includes a Shake Awake feature, Solar Fail Safe, 10 daytime and 2 night vision brightness settings, and an IP67 submersion rating. It weighs 1.72 ounces and has a window size of 0.66" x 0.90".
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