The original variant from the M60 collection also fulfilled the definition of the late 1st era MBT occasionally currently being called an intermediate 2nd generation design. The Soviet T-fifty four and T-fifty five in addition to the initial configuration on the T-62A tank styles will also be considered first era https://hoytmachineguns.com/product/walther-mpl-9mm-pre-may-sales-sample-2-mags-26302/