There was a RUSI paper at the start of the Russian invasion of Ukraine that identified this problem. The one area of munitions supply that was in good shape wa

There was a RUSI paper at the start of the Russian invasion of Ukraine that identified this problem. The one area of munitions supply that was in good shape was 5.56mm, the "assault rifle" culture in the US means there are enough people plinking at targets to keep a good number of factories profitable.