The RFX 11 is the next in a long line of purpose-built, high quality, and highly visible aiming devices from Viridian. Its tiny size is at home on any optics-cut concealed carry pistol or as a close-range offset sight on your rifle.At a mere .4 ounces, the RFX 11 is one of the lightest reflex sights on the market. Packed with features including a highly visible and efficient Viridian green 3 MOA dot, ambient light sensor and over 30k hours of run time make the RFX 11 a must have for any firearm. This optic is co-branded with the KelTec logo.Includes Picatinny Mount Wrench Set Screw Set CR2032 Battery *** NOTICE*** - This optic can not be mounted on the standard P17 slide. The slide must be optic ready.