Holosun 509T X2 Holosun 509T X2 The HE509T-RD X2 is a hard-use, nitrogen-purged enclosed LED sight designed for handgun applications. The HE509T-RD X2features a grade 5 titanium housing, Holosun’s Super LED with up to 50k hour battery life, Multi-Reticle System,... MSRP: Was: Now: $429.99 - $459.99 Choose Options