The M72A1 is a portable, shoulder-fired anti-tank weapon developed by the United States during the Vietnam War. It is a lightweight, single-shot rocket launcher designed to destroy armored vehicles and fortifications. The M72A1 features a 66mm caliber and is equipped with a high-explosive anti-tank (HEAT) warhead, making it effective against various types of armor. This weapon is an improved version of the original M72 and offers enhanced performance and reliability. The M72A1 is typically used by infantry units and can be easily carried and deployed in combat situations. Its design allows for quick aiming and firing, making it a valuable asset on the battlefield.