The initial variant with the M60 collection also fulfilled the definition of the late 1st generation MBT in some cases being referred to as an intermediate 2nd era style. The Soviet T-54 and T-55 plus the original configuration from the T-62A tank layouts are also regarded as 1st era MBTs.[44] https://hoytmachineguns.com/product/lot-416-auto-ordnance-1928-a22-class-iii-nfa-machine-gun/