Background checks are an important enforcement tool, but a NICS response and the underlying legal disability are not the same thing.
What NICS checks
Federal firearms licensees generally contact the National Instant Criminal Background Check System before transferring a firearm to an unlicensed buyer, subject to statutory exceptions. NICS compares identifying information against relevant records.
A denial can arise from many prohibited-person categories
Felony convictions are one category. Domestic-violence convictions, qualifying restraining orders, certain mental-health adjudications, immigration status and other § 922(g) categories can also matter.
Old restoration or court records can cause problems
If a court record, pardon, set-aside or restoration was not transmitted or coded correctly, the background system may not reflect the current legal status. Documentation is critical when seeking correction.
Do not treat an approval as immunity
A mistaken approval does not legalize possession by a person who is actually prohibited. The statute, not an erroneous transaction response, controls criminal liability.
How to research your own record
- Get the judgment, charging statute and sentencing/discharge records.
- Identify the exact state and federal firearm disabilities that may apply.
- Verify whether any expungement, pardon, set-aside or restoration order changes the conviction for firearm-law purposes.
- Check current statutes and controlling appellate decisions before possessing, receiving or purchasing a firearm or ammunition.
Use the 50-state + D.C. directory, the § 922(g) guide, and the federal restoration guide for the next layer of research.