Three Secondary Machine Guns
Three secondary machine guns come equipped on the M1 Abrams, with an optional fourth. They include one 50-caliber M2HB heavy machine gun mounted on the commander’s hatch in the front and two M240 7.62mm machine guns with one on a skate mount in front of the loader’s hatch and the other on the coaxial mount. The fourth optional weapon is a second coaxial .50 cal. M2HB machine gun placed above the main gun.