Mk 153 Shoulder-Launched Multipurpose Assault Weapon

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.

Source: Wikipedia — Mk 153 Shoulder-Launched Multipurpose Assault Weapon (CC BY-SA 4.0)