hi everyone, can someone link myself into the correct pamphlets, for the m110a2 description please, would like to see if the old Barrel store barrel is the right length or would I need to find something better.

What is incorrect on all of the incarnations of that kit are the two pieces the barrel fits into. Each section is the wrong length. I think they tried to average them out between the different vehicles. If memory serves even the notched were in the wrong location. I did measure that out specifically for the A2 (and the barrel as well) and have it written down somewhere at home with a poorly drawn diagram...