ETS GLK-22-140 GLK22140: ETS magazines are made from advanced polymers that provide extreme impact resistance so they won t crack or break when dropped. With superior heat, cold, and UV resistance, these magazines won\'t become brittle over time, even when exposed to harsh environments, chemicals, or extreme cold. Its durable construction eliminates creep so the feed lips and body won\'t spread when being stored long term, even when fully loaded. ETS magazines for Glock pistols features a translucent body allowing you to see your ammo count. This model has a 19-round 40 S&W capacity and is compatible with Glock 22/23/27 (Gen 1-4). It is 140mm - competition legal.