The Mk 153 Shoulder-Launched Multipurpose Assault Weapon (SMAW) is a smoothbore shoulder-fired rocket launcher. Primarily used as a portable assault weapon, or "bunker buster", it also possesses secondary anti-armor capabilities. Developed from the Israeli B-300, the SMAW was introduced to the United States Armed Forces in 1984. While it retains similar external characteristics to the B-300, the American-redesigned SMAW features a key distinction: the integration of a 9×51mm spotting rifle, which is an evolution of the one developed for the LAW 80. The spotting rifle's purpose is to enhance target acquisition and improve hit probability.