re: #261 Nojay UK
As Decatur Deb pointed out the ammunition for small arms can be obtained just about anywhere.
It’s the complex weapons; tanks, MICVs, aircraft; that have their parts made all over the country. The pork barrel politics of arms manufacturing in the States makes this necessary. As I recall ever state in the union has at least one manufacturing contract regarding parts for the M1.
I figure when the States break up neither side can keep their equipment running for long so there’s good money to be made acting as a middleman.