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Supporting M1A2 Abrams SEPv3 Modernization

The original version of the Abrams tank (the M1) first entered U.S. Army service in 1980, and subsequently, the vehicle has undergone upgrades and modernization, with distinct models (the M1A1 entering service in 1986, most noted for the transition to a 120mm smoothbore gun from the original 105mm rifled gun; followed by the M1A2 model starting in 1992) and since 1999, several System Enhancement Packages to improve various capabilities. A planned M1A3 model is expected to debut in 2020.