In 2009 Heckler & Koch (USA) sued German Sport Guns GmbH (GSG), who manufactured the GSG GSG-5 .22 rifle, and American Tactical Imports (ATI) who imported the GSG-5 into the USA. They successfully argued that the GSG-5 infringed upon their design patents for the H&K MP5. They took court action soon after licensing the design to Umarex […]
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