The M 10 used the same drive train as a Sherman but had a different body . If the lower body , wheels and track were on one spure it could be used on various M4 type vehicles . The M 18 Hellcat and M 24 Chaffee were built by different companies , Buick and Cadillac / Massey-Harris and although they look the same the Chaffee is about 3 feet shorter and had different width tracks . So not really a good 2 in 1 kit . The M 10 on the other hand was used by the US , Brits , Canadians , Poles , Free French and Russians , as well as the Commonwealth forces getting the up gunned Achilles version . The Achilles version had a different style turret with a longer set of rear counter weights (duck bill shaped ) to off set the heavier gun . The original M 10 had a 5 sided turret with triangular shaped weights , but it seems the same gun mantlet was used on both types . As a side note , the racks on the hull side of the M 10 were for the track groucers , a sort of stud for tank tracks ( also carried by Shermans , in the rear hull , M3 Lee / Grants & M7 Priests in boxes on the hull roof and glasis plate , and M5 Stuarts & M8 HMC on the turret sides / galsis plate ) . These were issued to tanks that had the rubber pad track , if all steel track was on the vehicle , the racks were empty or removed .