The Samson fixed front sight is made of 6061 T6 aluminum and mil spec hard coat anodized. It features a standard mil-spec adjustable sight post which can be adjusted with any standard sight tool. The HK style halo allows for fast target acquire and sight alignment. The sight will mount to any Picatinny rail and is designed to be mounted at any reciever rail height. It is not intended for lower gas block rails. The durable construction and solid mounting system guarantees you to stay on zero.