America responded by starting off improvement with the XM60 tank in September 1957.[18] This new tank design included quite a few Military Overcome Vehicle (ARCOVE) committee enhancements to the M48A2, chiefly the use of diesel engines to improve its operational assortment and the use of a more powerful key gun. https://hoytmachineguns.com/product/intratec-kg9-registered-receiver-with-factory-foregrip/