Sometimes NICS does that and it's as random as can be. You can buy a gun today and get a proceed and come back tomorrow and buy another one and you get a delayed. After 3 business days it is up to the dealer to proceed or not with the transaction if they haven't heard back from NICS.
"Regardless of whether justified of not, you will feel sad about killing another human being. It is better to be sad than to be room temperature." - Joe B Fricks.
01 FFL, GOFFA, NRA, GOA, IAVA, VFW, ABATE of Iowa D15.