The M16 Multiple Gun Motor Carriage, also known as the M16 half-track, was an American self-propelled anti-aircraft weapon built during World War II. It was equipped with four .50 caliber (12.7 mm) M2 Browning machine guns in an M45 Quadmount. 2,700 were produced by White Motor Company from May 1943 to March 1944, with 568 M13 MGMCs and 109 T10 half-tracks being converted into M16s as well.

The chassis was derived from the T1E2 chassis, an earlier version of the M13. Based on an M3 half-track chassis, it replaced the M13 MGMC half-track after early 1944. As aircraft became more advanced, the usefulness of the M16 was reduced. In the Korean War, it was relegated primarily to the ground-support role, being put out of service in the U.S. Army in 1954.

Nicknamed the “Meat Chopper”, the M16 was famous for its effectiveness against low-flying aircraft and infantry, making it extremely popular with soldiers. It was used by the United States Army, the British Commonwealth, and South Korea. A similar version of the M16, the M17, was based on the M5 half-track and exported via Lend-Lease to the Soviet Union.

The M16 MGMC entered service in early 1944, with the M13 taken out of action soon after. The M16 was nicknamed “The Meat Chopper” for its deadly firepower, and was extremely popular with troops. In addition to its anti-aircraft role, the M16 was used in an infantry support role, frequently accompanied by the M15 half-track. The M17 MGMC primarily served with the Soviet Union as part of Operation Bagration and a few other battles.

The M16 saw service with U.S. forces in the Italian Campaign, and Operation Overlord, the Battle of Arracourt, and the Ardennes Offensive in northern Europe. Small numbers were supplied to the United Kingdom and France under Lend-Lease. The vehicle was also used widely in the Korean War by the South Korean army, the United States Marine Corps, and the US Army.

As aircraft became more advanced over the M16’s lifetime, its role as a mobile anti-aircraft weapon became limited, and the newer M19 MGMC was more heavily-armed with more powerful and longer-range guns. During the Korean War, it served mainly in the ground-support role, at which it was highly effective. In late 1951, it was declared as “limited standard” and largely taken out of service from the U.S. Army in Korea, although a few examples served until the end of the war. It was declared obsolete by the U.S. Army in 1958.