German Sport Guns GmbH was born in 2002 from the vision of three industry veterans—Dietmar Emde, Manfred Nienhaus, and Michael Swoboda—who saw an opportunity to bring affordable, high-quality rimfire firearms to the market. Starting with limited resources and creative financing, the founders leveraged their experience at Umarex and early partnerships with companies like Gamo to secure their first development contracts. The breakthrough came with the development of the SIG Sauer Mosquito and the launch of the GSG5, a .22 LR tactical rifle that pioneered a new category of rimfire replicas. GSG's commitment to innovation and quality quickly earned it a foothold in both the German and international markets, with American Tactical Imports becoming a key partner for US distribution. In 2013, GSG joined the L&O Holding group, aligning with prestigious brands like Blaser and Mauser, which enabled further growth and investment in manufacturing. Despite challenges such as integrating the historic Diana brand and navigating shifting market demands, GSG has remained true to its mission: making shooting sports accessible and enjoyable through reliable, affordable, and innovative products. Today, GSG stands as a respected name in the industry, known for its technical expertise, customer focus, and enduring passion for firearms.