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. Features Compatible with both pistols and rifles 5-MOA red dot Waterproof, fogproof, shockproof Extended battery life Compatible with Glock Mount Plate #1