The GSG-5 in cal .22lr is a product of German Sport Guns (GSG) in Ense-Höingen / Germany. The GSG 5 is an identical replication of the MP 5, except one great thing: Its a 22 cal. Because of the low cost of ammunition the GSG 5 makes a perfect plinking rifle, training rifle or a serious varmint hunting rifle. Nothing of its kind has ever been introduced in the United States. The user will be impressed with its weight and performance. If you are a varmint hunter you will be encouraged by all the options the GSG-5 has to offer with its railing system, faux suppressor and easy change magazine. For training purposes, the GSG-5 is a low-cost alternative for Law Enforcement agencies and departments that use MP5s in the field.