The Truglo Picatinny Style Riser Mount for half-inch tubes is designed for superior strength. This mount is simple to install without the need for modification. The mount may be used with red dot sights and is ideal for use with scopes. The piece will fit any AR-15 flattop and will raise the mounting platform by a half an inch. The length of this mount is about 4 inches. The design will maximize strength and stability for your scope.