United State : Online gun purchase background check This database contains the number of firearm background checks as required by the National Instant Criminal Background Check System (NICS). NICS is a national system that checks available records on persons who may be disqualified from receiving firearms. Check Our Database at: https://randstatestats.org/us/stats/firearm-background-checks.html#sthash.kt7CVQqj.JYDLKA4Y.dpbs