Fits the Glock 437-round capacity but sits flush like a standard 6-round OEM Glock 43 magCompatible with Glock and aftermarket floorplatesEasy disassembly with the ETS specially designed baseplateErgonomically designed floorplate makes it easy to grab from mag pouchesLifetime Warranty ADVANCED POLYMER BENEFITS : Extreme Impact Resistance - won't crack or break when dropped Very resistant to harsh chemicals Superior heat, cold and UV resistance and 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