The May 2018 NSSF-adjusted National Instant Criminal Background Check System (NICS) figure of 904,834 is a decrease of 8.5 percent compared to the May 2017 NSSF-adjusted NICS figure of 988,473. For comparison, the unadjusted May 2018 FBI NICS figure 1,983,346 reflects a 4.5 percent increase from the unadjusted FBI NICS figure of 1,898,840 in May 2017.