Quote:
Originally Posted by JagdtigerI
4The M18 was the only vehicle specifically designed for the US Army's tank destroyer role. It was far smaller than the M10 and weighed half as much. The 76.2-mm M1A1 gun on the M18 was a development of the 3-in used on the M10 but with better all around performance.
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The 76mm was an entirely new design. It used a concentric spring recoil mechanism, was substancially lighter as the barrel used a better steel reducing its thickness, the breech was all new too. The M 10's 3" was basically the same as the pre-war 3" AA gun developed in the late 20's early 30's.
As for size, the M 18 is about the same size and almost the same height as the StuG III.