Sphinx Systems Limited is a small Swiss based manufacturer of high quality pistols used mainly by special forces, elite police units and sports shooters. The company has been in business since 1876. Sphinx is best known for its ongoing development of the original Czech designed CZ-75 pistol, which has been evolved into the S2000 and S3000 designs. Sphinx started its work with pistols based on the CZ-75 design when they redesigned the AT-84 pistol, a first evolution of the CZ-75 that had been developed in Switzerland by a competitor who later went out of business.