Tailor made for competition or defensive use the GL L-Plate is designed to aid in seating of the magazine into extended magazine wells and to provide positive traction and impact protection without unnecessary bulk. It is designed for all Magpul PMAG GL9 magazines for the Glock 9mm and replaces original PMAG GL9 floor plate adding approximately 1/4 in length. NOTE: The GL9 L-Plate only fits Magpul PMAG GL9 series magazines does NOT fit factory Glock magazines. Will not increase magazine capacity.