The external differences between the A1 and A2 version are the Commander's Independant Thermal Sight (CITS) on the left front turret top where there is a bolted access cover on the A1, and the new Commander's Cupola. The A2 cupola has a new .50 cal mount that allows it to be fired from outside the turret, more like a traditional pintle mount .50 cal and new vision block set-up. You can see the new parts in the photo below.
And yes, the Trumpeter A2 is the same kit as A1 with extra parts added. It still has all the A1 parts too, so you can build either.
Gino P. Quintiliani - Field Artillery - The KING of BATTLE!!!
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