Upgrade your rear sight to the Magpul MBUS 3 Rear Sight. The polymer construction offers a lightweight, resilient design, and the spring-loaded technology enables you to instantly deploy the sight for use with the push of a button. The rapid-select aperture system can be adjusted with ease to accommodate wind, and the sight sits at standard AR-15 height when in use. Magpul MBUS 3 Rear Sight Black - Shooting Supplies And Accessories at Academy Sports
