This is comparable to the M1A2
It has the 120mm M256 cannon, improved fire control system, and NBC overpressure system, and improved suspension. These improvements give the M1A1 greater shoot-on-the move capabilities and an increased first round probability against advanced enemy armor. It also has a crew of 4 and 3 7.62mm M240 anti-personnel machine guns mounted on it.
35 M1 tanks were destroyed by Iraqi fire during Operation Desert Storm.