The usa responded by commencing development with the XM60 tank in September 1957.[18] This new tank design integrated a lot of Army Combat Auto (ARCOVE) committee enhancements to the M48A2, chiefly the use of diesel engines to increase its operational vary and the usage of a more powerful primary gun. https://hoytmachineguns.com/product/ingram-m11-m11a1-380-acp-small-frame-mac-powder-springs-ga/