The Magpul XTM Enhanced Rail Panels 4-Pack replace original XTM panels and are designed to be attached to a 1913 Picatinny rail without having to remove previously mounted accessories, and the four 2-piece panels will cover 1 side of a carbine rail. Antislip texture. Dual-side routing clips for retention of light or laser cables. Magpul XTM Enhanced Rail Panels 4-Pack Black - Shooting Supplies And Accessories at Academy Sports