Since 1949, Heckler & Koch has been manufacturing high-quality handguns, rifles, submachine guns, and more, becoming popular with the invention of the iconic MP5 or G3 rifle platform. They also manufacture high-quality accessories such as magazines and other equipment, putting their motto of "no compromise" at the core of their success. With many advancements made in the use of polymers in their firearms, H&K rifles are designed to be light and effective.