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. Features: Extended 19 round capacity Fits the Glock 22, 23, 24, 27, and 35 Compatible with Gen 1 through Gen 4 Glocks Compatible with most floor plates that fit Glock magazine Easy disassembly with our specially designed base plate Ergonomically designed floor plate makes it easy to grab from mag pouches Lifetime warranty Extreme Impact Resistance - won't crack or break when dropped Very resistant to harsh chemicals Superior heat, cold and UV resistance - won't become brittle over time even when exposed to harsh environments or extreme cold Translucent body - allowing you to see your ammo count and type Creep resistant - the feed lips and body won't spread when being stored long term even when fully loaded