Also, the barrel-life on the T-62AG is... not great... so it could probably swap guns between missions.

In this case a crude reversion to 115mm to better use local ammunition supplies. This however will mean it'll only be able to carry 35 115mm tank-rounds instead of the factory-default of 40, or the modified load of 35+5 120mm tank rounds. The 115mm would also be useful for low-threat environments and would have a 'cheap' 4-piece platics/fiberglass thermal-sleeve from the 1983 pattern of upgrades.

[quote]firing in the rain [without a thermal sleeve] has resulted in errors of up to 7 mils from barrel distortion, and by contrast, the maximum barrel distortion from solar heating occurs at 10 a.m in the morning and 4 p.m in the afternoon and the errors from heating and other external factors cumulatively induce an error of up to 1 mil. The installation of a thermal sleeve over the gun barrel will reduce the error when firing in the rain down to only 0.25 mils.[/quote]

-tempted also to run methanol/gasoline in the external fuel-tanks and diesel or biodiesel in the internal fuel. As the post-fossil-fuel energy-system seems to favor methanol/ethanol. And the MM-1 mobile nuclear refinery was basically pulling Carbon-Monoxide from the atmosphere, then adding water and electricity/heat to get methanol to run tanks and jeeps and jets and stuff.
--Things get really fun when you [url=https://en.wikipedia.org/wiki/Syngas]syngas the syngas[/url] into [url=https://en.wikipedia.org/wiki/Dimethyl_ether]a 1:1 biodiesel substitute[/url]