M45 Quadmount

The M45 quad mount is a towed anti-aircraft gun consisting of four .50 caliber M2 Browning machine guns mounted in pairs on either side of an armored open-top gunner's compartment with electrical laying. It was developed by the W. L. Maxson Corporation to replace the earlier M33 twin mount (also from Maxson). Although designed as an anti-aircraft weapon, it was also used against ground targets, where it earned the nicknames "meat chopper" and "Krautmower". Introduced in 1944, it saw service as late as the Vietnam War.