Elite Tactical System magazines are made from advanced polymers that provide extreme impact resistance so they won't crack or break when dropped. With superior temperature tolerances these magazines won't become brittle over time, even when exposed to harsh environments, chemicals, or extreme cold. Their durable construction eliminates creep so the feed lips and body won't spread when being stored long term, even when fully loaded. Features: Works with ETSCAM-RIFLE speed loader Lifetime Warranty Extremely reliable feeding, even with hollow points Fits standard MP5 mag pouches and couplers Creep resistant feed lips and body won't spread when being stored long term even when fully loaded Extreme impact resistance