The ETS Magazine features a translucent body which allows you to see your ammo count and type. It features an impact resistant construction meaning it won't crack or break when dropped. The Magazine is also creep resistant, and the feed lips as well as the body won't spread when being stored long term even when fully loaded. The ETS magazine is resistant to harsh chemicals including heat and cold as well as UV resistant, meaning it won't become brittle over time even when exposed to harsh environments or extreme cold. The ETS magazine is a unique accessory and makes for a perfect addition to your HK parts arsenal. Optimized to run hollow points The same reliability you've come to expect from H&KA(R) magazines Translucent body-allowing you to see your ammo count and type 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 Creep resistant-the feed lips and body won't spread when being stored long term, even when fully loaded 100% MADE IN USA