Helikon-Tex - Glock Magwell (Gen 1, 2, 3)Pistol mag well designed for easier and faster reloading. It ease sliding the magazine into the magazine port, additionally enhancing the grip when the gun is hold in one hand. It supports the edge of our hand. Features Made of black polymer Helps in smooth, easy reloading without fumbling around Enhance weapon grip Fits GLOCK 17, 17L, 22, 24, 31, 34, 35, and 37. Full sized 9mm, . 40, . 45 GAP, and . 357 Sig Fits only Gen 1, 2 or 3 Glock Do NOT fit