The M1 Abrams is a third-generation American main battle tank designed by Chrysler Defence (now General Dynamics Land Systems). Conceived for modern armoured ground warfare and now one of the heaviest tanks in service at nearly 68 short tons (almost 62 metric tons), it introduced several innovative features, including a multifuel turbine engine, sophisticated Chobham composite armour, a computer fire control system, separate ammunition storage in a blow-out compartment, and NBC protection for crew safety
