Perfect for adding correct height for optics on your AR-15 or tactical rifle. With 1.6" of rail space, this mount brings the sight plane up by .5".Perfect for adding correct height for optics on your AR-15 or tactical rifle. With 1.6 inches of rail space, this mount brings the sight plane up by 0.5 inches. Features: Accepts all standard Weaver/Picatinny 1913 accessories Lifts your mounting surface by 1/2 inches