Fills in the cut-out at the bottom of the Glock frame. Provides a more comfortable and secure gripping surface. Replaced factory magazine floor plate without increasing overall length of grip. Mag-Track feature facilitates magazine identification. FML fits new-style metal lined magazines for models 17, 18, 19, 22, 23, 24, 25. Fits Glock Models with a semi-circular cut-out in the lower front area of the grip body only. Mfg: Pearce Grip SPECS: Nylon plastic, matte black.