A unique feature of Windham Weaponry‘s new lightweight MCS Railed Forend is interchangeable panel mounting which offers great flexibility in mounting additional accessories, or changing the look and feel of the forend. Panels can be had in KeyMod; “Snakeskin”; M-Lok; “Frag” and Picatinny Rail (either 5 slot or 11 slot configurations) patterns (top tobottom in photo) to allow complete customization of the forend. Snakeskin & Frag panels are proprietary polymer material. KeyMod, M-Lok, and Picatinny patterns are 6061 black anodized aluminum. Sold with mounting screws in sets of 3 (3 ea. of same type panel in each kit, except Picatinny Rail panels are sold individually). Made in the USA.