NICS checks in May were 1942677 vs 1870000 for the previous May, This is the first time this year in which monthly NICS checks actually exceeded all previous years numbers for the month. The 3.8% increase id not exactly earth shaking either.
Last year, June and July showed an abnormal bump in anticipation of some sort of government skulduggery or something so this year I expect checks to be significantly below last year. Look for big press articles heralding the end of the "gun boom". I'm also going to stick my neck out and predict that August will be another new record.