Except a bunch is old stock or overstock. The US was sitting on stockpiles of 203mm artillery rounds from the m110 that they would've had to pay someone to decommission, but it turns out that there's a soviet arty piece that can use them, and guess what? Ukraine has em. Not to mention they chronically overproduced M1A1 Abrams to the point that generals were begging for it to stop, simply because it would be more expensive to shut down and restart production than simply keep making tanks nobody wanted or needed. Plus, a significant portion of the old inventory was DESIGNED to blow up russian equipment. So the US is clearing out old shit, crippling the Russian military, and aiding a new democracy. The only downside is the fresh money that is probably going to be dumped into the MIC to fill those clean shelves, but (and this is basically NCDposting but here we go) the fact that the US can almost singlehandedly provide Ukraine the resources to hold out against fucking Russia for over a year and that equioment still being only a tiny fraction of their total might? Holy shit. Grab the money shovels boys.