The RAD Micro Compact Open Reflex Sight by Crimson Trace is optimized for use with compact, everyday carry pistols, and delivers fast target acquisition and engagement. The RAD Micro utilizes a precise 3.0 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 CTS-1550 attaches to your weapon with industry standard J-point mounting interfaces. Features of the RAD Micro: Mounts via with industry standard mounting interfacesExternally accessible battery compartment 3.0 MOA dot reticle High efficiency LED Crimson Trace RAD Micro Red LED Illuminated Reticle Compact Open Reflex Sight 01-01800