The Daniel Defense Fixed Front and Rear Sight Combo comes with everything you need to install back-up iron sights on your rifle. These fixed iron sights easily install on Picatinny rails and stay secure thanks to patented Rock and Lock® Attachment Technology. The front sight included in this combo package is designed with a compact profile that allows it to easily mount behind weapon lights. The rear sight has been specifically designed for the AR platform and won't impede manipulation of the charging handle. Built with aircraft-grade aluminum, the Daniel Defense Fixed Front and Rear Sight Combo offers precision aim and quick, easy mounting to any Picatinny rail.