Your purchase of the 9MM Luger Magpump and an adaptable retainers to fit many different pistol models such as GLOCK, SIG, Smith & Wesson, Springfield Armory, CZ and Ruger. MagPump also offers several additional retainers for other pistol manufacturers. Retainers are designed to fit magazines for popular 9MM models. DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.