A Full Breakdown of the NICS and 4473 Process
When people talk about buying guns in the United States, they often bring up one important question: “What is a NICS check?” If you’re new to the firearms world or simply curious about the process behind legal gun sales, this article is for you. We’ll offer a complete look at the NICS system—short for the National Instant Criminal Background Check System—and explore how it helps keep firearms out of the wrong hands. Along the way, we’ll touch on federal background check firearms requirements, look at the NICS process explained step by step, and discuss what happens if someone fails or appeals a background check.

The Basics
- What is a NICS check? It’s a swift, computerized review to see if a buyer is allowed to own a firearm.
- The system uses several major databases to flag criminal histories, mental health rulings, and other legal disqualifiers.
- If your purchase is delayed, the FBI has three business days to decide.
- Private sales sometimes don’t require checks, but that depends on state laws.
- You can appeal a denial if you think the system made a mistake.
Table of Contents
What Is a NICS Check?
What is a NICS check? Put simply, it’s a screening process that licensed gun dealers use to see if a potential buyer can legally own a firearm. The NICS program began in 1998 under the FBI. When the Brady Handgun Violence Prevention Act passed in 1993, it established stronger safeguards to stop firearms from ending up with people who are not allowed to own them. Since then, NICS has become a central part of how dealers sell guns legally in many states.

Here’s how the NICS process explained in basic terms:
- A buyer fills out ATF Form 4473 at a Federal Firearms License (FFL) location.
- The FFL sends the buyer’s info to the FBI’s NICS, either by phone or computer.
- The system checks several databases to see if the buyer is disqualified from owning a gun.
- The FBI returns one of three answers: Proceed, Deny, or Delayed.
- If delayed, the FBI has three business days to make a decision. If there’s still no answer after that time, the sale may go forward, depending on local laws.
This entire process aims to stop people with certain criminal records or other disqualifiers from buying guns.
Why NICS Matters
When you consider what is a NICS check, it’s more than just a simple question. This background check system is a core safeguard to prevent illegal firearm ownership. It draws on multiple databases:
- National Crime Information Center (NCIC): Looks up active warrants and protective orders.
- Interstate Identification Index (III): Stores criminal histories from across the country.
- NICS Index: Holds records about mental health rulings, immigration status issues, or other bans.
Together, these sources catch if a buyer is a convicted felon, is a fugitive from justice, has a record of domestic violence, or has been judged mentally unfit to handle firearms. Because many states rely on the FBI to run these checks, they can swiftly learn if someone is ineligible. As a result, the federal background check firearms process helps ensure that selling a gun to a buyer follows the law.
The Step-by-Step NICS Process Explained

Filling Out Form 4473
When you walk into a gun store (all have to have a Federal Firearms License and follow the same federal laws) and decide to buy a firearm, your first step is to fill out Form 4473. This document asks for personal details like your name, address, and ID numbers. You must also answer questions about criminal history, substance abuse, and mental health issues.
Submitting Your Information
The licensed dealer sends your data to the FBI’s NICS. They can do this by calling the NICS hotline or by logging into the FBI’s electronic system. This is a crucial moment in the federal background check firearms process because the details you provided will be matched against national records.
Database Searches
Next, NICS combs through multiple records. If your name, birthdate, or other details appear in any database that shows you’re banned from owning a firearm, the NICS will issue a Denied result. If there’s a close match that still needs more research, you might see a Delayed result while the FBI digs deeper.
Possible Outcomes
- Proceed: You pass the background check. The store can sell you the gun on the spot. Or a waiting period may start depending on the State.
- Deny: You’re considered a prohibited person, possibly due to a criminal record or other legal barrier. The sale is halted, and you cannot receive the firearm.
- Delayed: NICS needs more time. If there’s no final answer within three business days, the store can legally choose to proceed with the sale, unless state law says otherwise.
What if You’re Delayed or Denied?
People sometimes wonder, “What is a NICS check outcome if I get delayed or denied?” A delay usually means the FBI saw a partial match that requires extra checks. A denial means you are not allowed to own a firearm. If you think it’s a mistake, you can appeal through the FBI. This can involve sending fingerprints or paperwork that proves you’re not the prohibited person NICS flagged.
Appealing a Denial
If the FBI denies your purchase, you can appeal to fix any errors. You’ll need your NICS Transaction Number (NTN) from the gun dealer. Then you contact the FBI’s NICS section to ask why you were denied. Sometimes, old records or mistaken identities cause wrongful denials. You can also apply for a Voluntary Appeal File (VAF) if you often face delays or denials but are legally allowed to have a firearm.
How Long Does a NICS Check Take?
The vast majority of checks come back in minutes. The Department of Justice aims for an immediate decision in 90% of cases. Delays happen if your name or ID is similar to someone else with a criminal record or if your own record needs more thorough review. By law, the FBI has three business days to resolve a delay.

Exemptions and Private Sales
One detail to note when learning what is a NICS check: not every sale is subject to it. In many states, if you transfer a firearm privately (between two people in the same state), a NICS check might not be required, depending on local laws. Some states fill that gap by adding their own rules for private transfers. Also, individuals with certain “Brady Permits” might skip the check if their permit meets federal guidelines.
State-Specific NICS Requirements
While the FBI manages most NICS background checks, many states have their own laws or procedures that go beyond federal rules. If you’re asking, “What is a NICS check at the state level?” the short answer is that each state can have extra steps or systems in place.

Point of Contact (POC) States
- Full POC States: About 15 states—like California, Colorado, and Connecticut—act as their own background check centers. When a dealer runs a check, it goes through the state system rather than directly to the FBI.
- Partial POC States: Places like Maryland and Nebraska use the FBI for some firearm types but handle others themselves. This setup can change the length and details of the NICS process explained in those areas.
Brady Permit States
- Some states issue “Brady Permits” that exempt holders from another background check at the point of sale. These permits must be issued within the last five years and involve a background check that meets or exceeds federal requirements.
- If you have a valid Brady Permit, you might skip the standard NICS phone or online check.
Extra Steps for Reporting
- Many states require mental health records or court orders to be reported directly to NICS.
- States like Hawaii make sure every gun sale or transfer goes through a local permit process, which then ties into NICS.
- In Minnesota, for example, dealers must report certain purchases to local law enforcement if the buyer lacks specific state permits.
Staying Up to Date
- State firearms laws change frequently. Some pass new rules to strengthen reporting to NICS or to require checks on private sales.
- To avoid confusion, always check your state’s latest regulations before buying or selling a firearm. This is especially crucial for dealers who want to remain fully compliant.
In short, what is a NICS check at the state level can differ from place to place. While federal law sets a baseline, states have the freedom to enforce stricter rules or unique systems to keep firearms out of the wrong hands. Staying informed helps buyers and sellers navigate these variations, ensuring the process remains both legal and safe.
How the System Affects You
Knowing what is a NICS check can help you avoid surprises. If you have a clear record and your personal information is accurate, the check should be quick. If you’ve had run-ins with the law, it pays to check your status before heading to the gun counter, because attempting a firearm purchase while prohibited can lead to serious legal trouble.
Understanding Straw Purchases
When it comes to buying firearms, a “straw purchase” is another term worth knowing. Although the idea of what is a NICS check? covers preventing illegal sales, straw purchases can still slip through if buyers break the rules.
A straw purchase happens when one person buys something on behalf of another person who either can’t or won’t purchase it themselves. In everyday life, some straw purchases are completely legal—like picking up groceries for a neighbor who can’t drive. But it becomes illegal when used to dodge background checks or other legal barriers.

Illegal Firearm Straw Purchases
- A person prohibited from owning firearms asks someone with a clean record to purchase a gun for them.
- The real buyer avoids the federal background check firearms process by having someone else fill out the paperwork.
- This form of deception can result in federal charges, with penalties of up to five years in prison and heavy fines.
Why This Matters for NICS
- Straw purchases undermine the entire NICS process explained by putting guns into the wrong hands.
- Even a careful check can’t catch someone who lies about who the firearm is actually for.
- Anyone making a straw purchase commits a crime, and the seller may face penalties if they knowingly allow it.
Understanding straw purchases keeps law-abiding buyers and sellers vigilant. Whether you’re worried about “what is a NICS check?” or broader firearm safety, being aware of these illegal tactics helps protect everyone involved.
Wrapping Up - Policing the Brass
Whether you’re new to guns or just curious, it’s useful to understand the federal background check firearms process. By asking “What is a NICS check?” and knowing the answer, you stay informed about how gun laws and safety measures shape firearm transactions. The NICS process explained above is designed to keep firearms out of the wrong hands, but it also helps law-abiding citizens make legal purchases with minimal delays.