Tacfire IS009: These 45-degree iron sights are constructed from 6061-T6 aluminum with a black anodized finish for strength and durability. The front sight features an adjustable A2 post, and the rear sight offers dual apertures for use at short and long distances. These sights are designed to quickly transition from optics to iron sights by canting your rifle to 45 degrees. Includes front and rear sights for AR-15 platforms.