 In August 2001 the company rolled out the fully functional prototype of the 120S MBT at their Detroit, Michigan, facility.The prototype was shown at the IDEF Exhibition held in Turkey in October 2001.During development an upgrade to the M60A3 turret was considered, but the M1A1 turret was used because of its higher level of armor protection and the fact that the 120 mm ammunition is separated in the turret bustle.