Don't really see Japan doing it and that it would piss off the West Coast like no tomorrow if we tried to talk to them for that, but either way don't see why need to stay loyal to legacy American hardware if we can get something better or cheaper and can more easily make replacement parts with the industry we have and are will be made in time for the next Victorian war.
If we buying European, we not going to be making replacement parts.
Ditto to cheaper since Europe is also rearming.
The only question is if we can buy new advanced weapons.
To be frank, we not going to be easily make replacement parts for any 90s era or more modern gear. Victoria and Russia ensured that can't happen.
Our industrialisation is currently at the finished planning stage. We don't have the electronics, the chemicals or the advanced metallurgy to make 2020s gear.
Ammunition itself will be a HUGE project. Nitrocellulose for gunpowder will need imports from the American South and we still haven't cleared the Mississippi. And then we have to find cotton fields, which is a ?!?!?!?!?! Rumsfield exploding a tac nuke in Texas destroyed the Confederacy. Given Russian goals, there's probably small entities in the South able to connect to the global markets to sell cotton as raw resources.... But then again, maybe Victoria would have encouraged such cotton plantations under CORN.... We then run into the issue of black slavery and how that runs counter to our principles.
We do have access to salt like potash, scaling up our industries including transportation is currently part of our AP expenditure.
Russia's invasion of Ukraine has the U.S. looking for potash – a commonly used fertilizer – at home. But at what cost?
grist.org
We have steel, but we need the disapora to get the expert engineers and precision needed for machined shells and barrels. Hell, we haven't spent a single AP on machine tools yet. Our last turn was we laid the framework for industrialisation, let's not count our chickens before it hatch.
We are BADLY under industrialised to fight a war on our own. We NEED to buy foreign. We can import raw mats and convert them into gear but given the expense and difficulties, it might be easier to just buy the gear and focus on buying raw mats to convert into ammunition.
We cobbled an industrial base that gave us 80s era weapons to fight Victoria. This will not be sufficient to fight Russia, or even a prolonged fight against Victoria. We were running out of shells and we ran out navy ragged, using up huge quantities of coal, that we were only able to sustain because we got basing rights and etc in turn 2 n etc to support the Erie campaign.