I might be the only only visitor to this site who didn't know much about NICS other than having to fill out the form and then wait (California rule) 10 days. I wasn't too terribly surprised by what I found, which is that the so-called background check appears to be cursory. I've posted my references at the bottom so others can verify that what I've written is factual. The minor editorializing is mine.
There are 9 tests NICS uses to determine whether someone can purchase a gun:
This list catches some things and misses others. For example, making threats against people other than domestic partners or their kids as Nikolas Cruz did would not show up in a background check.
All records of successful inquiries (requests for NICS background checks) and inquiries that are approved after an appeal are destroyed immediately. So someone who repeatedly gets rejected when they first apply but manages to get approval would never be flagged. Similarly someone who submits a large number of applications (to buy a large number of weapons) in a short period of time would also not be flagged.
If for some reason an inquiry requires further checking, NICS has three business days to conduct further due diligence. If the inquiry has not been acted upon within three days it is automatically approved.
Before the NICS database was made operational, the original legislation required local LE to notify a gun seller that they had no information indicating the buyer was or should be prohibited until NICS was operational.
ATF definition of a prohibited person
Synopsis of Criteria for a Prohibited Person
Brady Bill This is the legislation that authorized NICS
About NICS (FBI site)
There are 9 tests NICS uses to determine whether someone can purchase a gun:
- Has the buyer been convicted in any court of a crime punishable by more than a year in jail
- Is the buyer a fugitive from justice
- Does the buyer use unlawful drugs
- Has the buyer been found by a court of law to be mentally defective or has the buyer been committed to a mental institution
- Is the buyer an llegal alien
- Was the buyer dishonorably discharged from the military
- Did the buyer renounce US citizenship
- Is the buyer subject to an order restraining the person from harassing, stalking or threatening an intimate partner or the child of an intimate partner
- Has the buyer been convicted of misdemeanor domestic violence
This list catches some things and misses others. For example, making threats against people other than domestic partners or their kids as Nikolas Cruz did would not show up in a background check.
All records of successful inquiries (requests for NICS background checks) and inquiries that are approved after an appeal are destroyed immediately. So someone who repeatedly gets rejected when they first apply but manages to get approval would never be flagged. Similarly someone who submits a large number of applications (to buy a large number of weapons) in a short period of time would also not be flagged.
If for some reason an inquiry requires further checking, NICS has three business days to conduct further due diligence. If the inquiry has not been acted upon within three days it is automatically approved.
Before the NICS database was made operational, the original legislation required local LE to notify a gun seller that they had no information indicating the buyer was or should be prohibited until NICS was operational.
ATF definition of a prohibited person
Synopsis of Criteria for a Prohibited Person
Brady Bill This is the legislation that authorized NICS
About NICS (FBI site)





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