In 2025 South Carolina reported a 30 percent surge in firearms equipped with binary triggers, sparking heated debate on public safety and gun rights. The short answer is yes – binary triggers remain legal in South Carolina in 2026, provided the device is not classified as a machine gun and the owner complies with state‑wide registration and background‑check requirements. However, the legality hinges on precise statutory language, recent legislative amendments, and how law‑enforcement interprets “automatic firearm” under the South Carolina Weapons Enforcement Act.
Statutory Landscape
South Carolina’s primary firearm statutes are codified at S.C. Code Ann. §§ 16‑23‑40 to 46. The definition of a “machine gun” excludes devices that fire one round per trigger pull, even if the second round is released automatically by the recoil. Consequently, a binary trigger, which discharges a round on both the pull and release of the trigger, does not meet the legal definition of a machine gun and is not prohibited by the state’s automatic‑fire ban.
2023‑2026 Legislative Updates
The 2023 “Firearms Safety and Responsibility Act” introduced an amendment requiring owners of any firearm equipped with a trigger‑modifying device to submit a Firearms Modification Notice to the South Carolina Law Enforcement Division (SLED). In 2025, SLED issued guidance clarifying that binary triggers are covered by this notice but are not classified as restricted weapons. No further legislation has altered this stance through 2026, leaving the current framework intact.
Enforcement and Penalties
If a binary‑trigger firearm is possessed without the required notice, the owner may face a Class 3 misdemeanor, punishable by up to 30 days in jail and a $500 fine. For repeat violations, the charge escalates to a Class 2 misdemeanor with up to 60 days imprisonment. Law‑enforcement agencies are instructed to prioritize cases where the device is used in conjunction with other prohibited modifications, such as a short‑barrel rifle conversion.
Practical Guidance for Owners
- File the Notice – Submit the Firearms Modification Notice within 30 days of installing a binary trigger. Include the firearm’s make, model, serial number, and a description of the device.
- Maintain Documentation – Keep a copy of the filed notice and any receipts for the trigger kit.
- Stay Informed – Monitor SLED bulletins for any policy shifts, as the agency retains the authority to issue interpretive rules.
- Avoid Public Misuse – Using a binary‑trigger firearm in a manner that threatens public safety can trigger additional charges under the state’s reckless endangerment statutes.
Is a binary trigger considered a “machine gun” under federal law?
No. The National Firearms Act defines a machine gun as a weapon that fires more than one round per single function of the trigger. A binary trigger fires one round per pull and another on release, which the ATF has consistently classified as a semi‑automatic mechanism.
Do I need a permit to purchase a binary trigger kit?
South Carolina does not require a separate permit for purchasing the kit itself. However, the firearm on which the kit is installed must be lawfully possessed, and the owner must complete the SLED notification process.
Can a binary trigger be used on a pistol?
Yes, the device is compatible with many pistols, but the same notification requirements apply. Some municipalities have enacted local ordinances that restrict binary triggers on handguns; always verify local regulations.
What are the penalties for failing to file the modification notice?
A first‑time failure is a Class 3 misdemeanor, carrying up to 30 days jail time and a $500 fine. Subsequent failures may be prosecuted as a Class 2 misdemeanor with harsher penalties.
Will future legislation likely ban binary triggers in South Carolina?
Proposals to restrict binary triggers have been introduced in recent legislative sessions but have not garnered enough support to pass. While the political climate remains fluid, no concrete ban is scheduled for the immediate future.