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.Magnification: 1xField Of View: UnlimitedEye Relief: UnlimitedDot Size: 5 MOALength: 1.73"Weight: 2.20 ozFinish: BlackReticle: Red DotProofs: Waterproof/Fogproof/Shockproof