The M1 Abrams is a third-generation American main battle tank designed by Chrysler Defense (now General Dynamics Land Systems). About 5,000 M1A1 Abrams tanks were produced from 1986–92 and featured the M256 120 mm (4.7 in) smoothbore cannon developed by Rheinmetall AG of Germany for the Leopard 2, improved armor, consisting of depleted uranium and other classified materials, and a CBRN protection system.
Credit: U.S Marine Corps video by Sgt. Jeremy Laboy, and Cpl. Aaron Douds