[DUMBGRUNT]

M1: 60 short tons (54 t)
M1A1: 63 short tons (57 t)
M1A1 SA: 67.6 short tons (61.3 t)
M1A2 SEPv2: 71.2 short tons (64.6 t)
M1A2C: 73.6 short tons (66.8 t)

NB: supplied by the low bidder, maintained by a PFC using only a pencil, minor rust and dents...
Be my guest.

[PIF]

70 tonnes = 77+ US short tons.