Extreme Impact Resistance, 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. Ergonomically designed floorplate makes it easy to grab from mag pouches.Features:Fits the Glock 17, 18, 19, 19x, 26, 34, and 45;Extended 31-round capacity;Compatible with Gen 1 through Gen 5 Glocks