The Advance Micro Reflex Sight is the smallest, lightest red dot in the Bushnell AR Optics family, and packs big performance into a compact package. It projects a 5-MOA dot through rugged optics, and is compatible with a large selection of rifles and semiautomatic pistols, including the Glock Mount Plate #1. The Bushnell AR Optics Advance Micro Reflex Sight is THE choice for lightweight performance. Black with 5 MOA Dot reticle Waterproof Construction - O-ring sealed optics stay dry inside, even when totally immersed in water. Shockproof construction - Built to withstand bumps, bangs, drops and the rough-and-tumble environment of the field. Includes Picatinny ada Mfg: Bushnell