I got approved 46 days after NICS and they didn't redo it.but it does. it servers two purposes. One, it shows that *something* is happening. That both makes the wait easier and harder. two, odds are great you'll get approved or denied within 30 days of NICS, if only because they'd have to redo the nics after 30 days. flimsy reasoning, to be sure, but no less comforting for that.