Fits the Glock 17, 18, 19, 19x, 26, 34, and 45 Compatible with Gen 1 through Gen 5 Glocks Extended 31-round capacity ETS mags won&';t crack or break, are resistant to heat, cold, UV and harsh chemicals - won&';t become brittle over time. ETS mags come with enhanced features like non-tilt followers, creep-resistant feed lips and clear body allowing you to see count and ammo type - leaving nothing to chance. Advanced Polymer Benefits: 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 loadedtable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }