Golf clubs are on extremely long deliveries in some cases.
3&4 irons especially, and to be honest I am surprised you ordered a 4 iron as I doubt you will use it much (with any success) before your handicap goes down to about 10.
I know of one delivery that was held up for an extra 6 weeks because of the grips that had been specified.
Had a different grip been specified then delivery would have been a lot quicker.
Did you get fitted for the irons?