What To Know Before Attending a South Carolina Gun Show

What You Need to Know Before Walking In

Gun shows in South Carolina are open to the public, but federal and state law restrict what you can buy, who can buy it, and what happens after the sale. You do not need a permit to attend, but you do need to understand the rules about private sales, background checks, and prohibited items before you go — because breaking these rules can result in federal charges, not just a fine.

South Carolina allows private citizens to sell firearms to each other without going through a licensed dealer, which is why gun shows exist as a marketplace. However, that freedom has hard limits. Federal law prohibits certain people from owning guns at all, and those prohibitions apply whether you buy from a dealer or a private seller. State law adds its own restrictions on what kinds of guns you can own and who can sell them to you.

The difference between a legal purchase and a federal crime often comes down to knowing the rules before you hand over money. This guide explains what those rules are, who enforces them, and what happens if you break them.

Key Takeaways

• Federal law prohibits certain people — including those with felony convictions, domestic violence convictions, and active restraining orders — from owning any firearm, regardless of where they buy it.
• Licensed dealers at gun shows must run a background check through the National Instant Criminal Background Check System (NICS), but private sellers do not have to in South Carolina.
• South Carolina law bans the sale of certain weapons outright, including fully automatic firearms and sawed-off shotguns, and these bans apply at gun shows just as they do elsewhere.
• If you are prohibited from owning a gun under federal or state law, attempting to buy one at a gun show is a federal crime that can result in prison time.
• Gun shows are monitored by federal agents and local law enforcement, and undercover operations targeting illegal sales are common.

Who Is Prohibited From Owning a Firearm

Federal law creates a list of people who cannot own or possess any firearm. This list applies everywhere — at gun shows, gun stores, and in private sales. If you fall into any of these categories, buying a gun at a gun show is a federal felony.

You are prohibited if you have been convicted of a felony (any crime punishable by more than one year in prison), convicted of a domestic violence crime (including misdemeanor domestic violence), subject to a court order restraining you from harassing, stalking, or threatening an intimate partner or their child, or adjudicated as mentally ill or committed to a mental institution. You are also prohibited if you are an undocumented immigrant, have renounced your U.S. citizenship, are subject to a protective order related to domestic violence, or have been convicted of a crime of violence.

South Carolina adds its own restrictions. You must be at least 18 years old to buy a rifle or shotgun and at least 21 to buy a handgun. You cannot buy a gun if you are subject to a restraining order under South Carolina law, even if it does not involve domestic violence. If you have been convicted of a crime of violence in South Carolina, you lose your right to own a gun for life unless your rights are restored by the court.

If you are unsure whether you are prohibited, do not attempt to buy a gun. The penalty for a prohibited person buying a firearm is up to 10 years in federal prison and a $250,000 fine.

Background Checks at Gun Shows

Whether a background check is required depends on who is selling the gun. Licensed dealers — people who hold a Federal Firearms License (FFL) — must run a background check on every buyer through the National Instant Criminal Background Check System (NICS), regardless of where the sale takes place. If you buy from a licensed dealer at a gun show, you will go through the same background check process as you would at a gun store.

Private sellers in South Carolina do not have a legal obligation to run a background check before selling a firearm to another private citizen. This is why gun shows exist as a marketplace — they allow private sellers to reach buyers without the cost and paperwork of a licensed dealer. However, a private seller cannot knowingly sell to a prohibited person. If a private seller suspects you are prohibited, they can refuse the sale. If they sell to you anyway and you are prohibited, both you and the seller can face federal charges.

The background check itself takes a few minutes. The dealer calls NICS, provides your information, and receives an approval, denial, or delay. Most checks clear immediately. If the check is delayed, the dealer can hold the gun for up to three business days while NICS investigates. If NICS denies the check, the dealer must refuse the sale and cannot give you the gun.

You cannot appeal a denial at the gun show. If your background check is denied, you have the right to request a reason from NICS and to dispute the information if it is wrong, but that process happens after you leave the show.

Weapons Banned in South Carolina

South Carolina law prohibits the sale and possession of certain weapons outright. These bans apply at gun shows just as they do anywhere else. If you buy a prohibited weapon at a gun show, you are breaking state law, and the seller is breaking state law.

Fully automatic firearms — guns that fire continuously while the trigger is held — are banned under both federal and state law. Converting a semi-automatic gun to fully automatic is also illegal. Sawed-off shotguns and rifles (barrels shorter than 18 inches for shotguns, 16 inches for rifles) are prohibited. Silencers are illegal in South Carolina. Armor-piercing ammunition designed to penetrate body armor is banned.

South Carolina does not ban semi-automatic rifles, high-capacity magazines, or specific calibers. You can legally buy an AR-15 or similar rifle at a gun show, provided you pass the background check (if buying from a dealer) and are not prohibited under federal or state law.

If you are unsure whether a specific weapon is legal in South Carolina, ask the seller or contact the South Carolina Law Enforcement Division (SLED) before you buy. Possessing a prohibited weapon can result in felony charges.

What Happens After You Buy

If you buy from a licensed dealer, you will fill out a federal form (ATF Form 4473) that asks about your background and whether you are prohibited from owning a gun. Lying on this form is a federal felony, even if your background check passes. The form is kept by the dealer for at least 20 years and can be inspected by federal agents at any time.

If you buy from a private seller, there is no paperwork required in South Carolina. The gun changes hands, and that is the end of the transaction. However, you still cannot be a prohibited person, and you still cannot use the gun to commit a crime. The lack of paperwork does not change the law — it only means there is no record of the sale.

You do not need a permit to carry a gun in South Carolina, but you do need to follow the law about where you can carry it. You cannot carry a gun into a courthouse, a school, a federal building, or a place that has posted a "no guns" sign. If you carry a gun into a prohibited place, you can be charged with a crime.

Federal Monitoring and Enforcement

Gun shows are monitored by federal agents from the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), as well as by local law enforcement. Federal agents conduct undercover operations at gun shows specifically to catch prohibited people trying to buy guns and to catch sellers knowingly selling to prohibited people.

These operations are common. An undercover agent may pose as a buyer or a seller, and the goal is to document illegal sales. If you are caught attempting to buy a gun while prohibited, or if you sell a gun knowing the buyer is prohibited, you will face federal charges. The penalties are serious: up to 10 years in federal prison for a prohibited person buying a gun, and up to 10 years for knowingly selling to a prohibited person.

Local law enforcement also patrols gun shows to enforce state law. If you attempt to buy a prohibited weapon or if you are caught with a prohibited weapon, you can be arrested on the spot.

Private Sales and Your Responsibilities

If you are buying from a private seller, you have a responsibility to make sure the transaction is legal. You cannot claim ignorance if you buy a prohibited weapon or if you are prohibited from owning a gun. The law assumes you know the rules.

Before you buy from a private seller, ask yourself: Am I legally allowed to own a gun? Is this gun legal in South Carolina? If the answer to either question is no, do not complete the sale. If you are unsure, do not buy. The cost of a gun is small compared to the cost of a federal felony conviction.

If you are selling a gun to someone else at a gun show, you have a responsibility not to knowingly sell to a prohibited person. If the buyer seems evasive about their background, or if they tell you they are prohibited, you cannot sell to them. If you do, you can face federal charges.

Frequently Asked Questions

Do I need a permit to attend a gun show in South Carolina?

No. Gun shows are open to the public, and you do not need any permit or background check to walk in. You only need a background check if you buy a gun from a licensed dealer.

Can I buy a gun at a gun show and take it home the same day?

If you buy from a licensed dealer and pass the background check, yes — you can take the gun home immediately. If the background check is delayed, the dealer can hold the gun for up to three business days. If you buy from a private seller, there is no waiting period under South Carolina law, but federal law still applies to you.

What if I have a felony conviction from another state?

Federal law prohibits you from owning a gun if you have been convicted of any felony, regardless of which state convicted you. This applies at gun shows just as it does anywhere else. You cannot legally buy a gun.

Can a private seller ask me questions about my background?

Yes. A private seller can ask you anything they want before agreeing to sell. If they ask whether you are prohibited and you lie, you are committing a federal crime. If you refuse to answer, the seller can refuse to sell to you.

What should I do if I see someone trying to buy a gun illegally at a gun show?

Report it to law enforcement or to the ATF. You can call the ATF's tip line or speak to a police officer at the gun show. Federal agents monitor gun shows specifically to catch illegal sales, and your information can help them do their job.