The Samson Evolution Hand Stop is made of 6061 T6 aluminum and is mil-spec hard coat anodized. It mounts directly to the Evolution rail eliminating the need for Picatinny accessory rails. It feature a stainless steel backing bar to ensure it does not lose hold. The Hand Stop can be mounted forwards or backwards depending on its purpose. It provides a gnarled face for barricade support and an alternate HK style sling point.