ProMag Industries Magazine, 308 Winchester/762NATO, 20 Rounds, Fits FN SCAR 17, Polymer, Flat Dark Earth FNH-A4-FDE ProMag magazines are designed utilizing both traditional stamping and welding of heat-treated high carbon steel" and modern precision injection molding of mil-spec polymer compounds. Every ProMag magazine is backed by a lifetime guarantee against manufacturer's defects. Made in USA