Caliber: 9mm – Capacity: 10rd – Works with ETSCAM-RIFLE speed loader – Extremely reliable feeding – Even with hollow points – Far lighter than steel magazines – Fits standard MP5 mag pouches and couplers – Lifetime 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 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