Byrna Technologies Inc., a less-lethal defense technology company, develops and manufactures less-lethal munitions. It offers a Byrna line of handheld personal security devices, including the Byrna SD and Byrna SD .68 caliber handheld personal security devices that are designed to be used by civilians and private security professionals, as well as Byrna HD magazines, shoulder-fired launchers, and projectiles. The company also offers accessories and related safety products, including the Byrna Banshee, Byrna Shield, compressed carbon dioxide canisters, sighting systems, holsters, and Byrna-branded apparels. It operates in the United States and South Africa. The company was formerly known as Security Devices International, Inc. and changed its name to Byrna Technologies Inc. in March 2020. Byrna Technologies Inc. was incorporated in 2005 and is headquartered in Andover, Massachusetts.