The RAD Open Reflex Sight by Crimson Trace is optimized for use with full size pistols, and delivers fast and easy target acquisition and engagement. The RAD utilizes a precise 3 MOA dot and has multiple illumination levels. The reticle is projected with a high-efficiency LED providing years of maintenance free use, and an eternally accessible battery compartment allows the battery to be changed without detaching the sight. In addition, the RAD attaches to your weapon with industry standard Doctor mounting interface. Features of the CTS-1250:Mounts via with industry standard Doctor mounting interfacesExternally accessible battery compartment 3 MOA dot reticle High efficiency LED Available with red or green reticles Crimson Trace RAD Red LED Illuminated Reticle Open Reflex Sight 01-01780