The M1A1 MBT is a US Main Battle Tank. It takes a four man crew and is armed with a 120 mm smoothbore gun, an M240 7.62 mm coaxial machine-gun, a 12.7 mm roof mounted heavy machine-gun and an M240 7.62 mm roof mounted machine-gun. It is equipped with a laser rangefinder and thermal imaging night sights. 40 shells are carried for the main gun. It has a top road speed of 67 kph. Defences include Chobhamarmour and a laser warning system. Research M1A1 MBT