SIG SAUER AG is a Swiss manufacturer of armaments. The company was previously registered as SAN Swiss Arms AG and changed its name to SIG SAUER AG in December 2019. It was known as SIG Arms AG before 2000 when it was acquired by the German investors Michael Lüke and Thomas Ortmeier from parent company Schweizerische Industrie Gesellschaft. The company is now part of L&O Holding, which also owns the German-based SIG SAUER GmbH & Co.KG and the US-based SIG SAUER Inc.