In 2026 the answer is yes, suppressors are legal in South Dakota as long as you follow the federal National Firearms Act requirements and the state has no additional prohibition. Most South Dakotans are surprised to learn that the state’s statutes do not expressly ban firearm suppressors, and the 2025 amendment to the ATF’s “NFA Forms 4 and 5” streamlined the approval process, reducing wait times to an average of 60 days. With a valid federal tax stamp, a background check cleared under the updated National Instant Criminal Background Check System, and compliance with South Dakota’s handgun registration law, a suppressor can be owned, transferred, and used for lawful shooting activities.
Federal Framework
The 2026 Federal Rules, embodied in the ATF’s revised NFA regulations, continue to treat suppressors as Title II weapons. Section 3 of the NFA mandates a $200 tax stamp for each device and a detailed application that includes a photograph, fingerprints, and a law‑enforcement certification. The 2025 rule change eliminated the “paperwork‑only” restriction for individuals who already hold a Class III license, allowing them to add suppressors to existing collections without filing a separate Form 4 for each device. Moreover, the ATF’s updated “Definition of Suppressor” clarifies that devices that reduce sound to 140 decibels or lower qualify, narrowing ambiguity that previously caused registration denials.
South Dakota State Law
South Dakota’s statutes (SD Codified Law §§23‑22‑3 and 23‑22‑5) address the possession of NFA items only by referencing the federal definition of “machine gun, short‑barrel rifle, short‑barrel shotgun, or suppressor.” There is no stand‑alone prohibition against suppressors, and the state has not enacted any registration or licensing scheme beyond the federal NFA requirements. Consequently, once a resident obtains the federal tax stamp, state law imposes no further barriers.
Interaction of Federal and State Requirements
Because South Dakota defers to federal regulation, any violation of the NFA – such as transferring a suppressor without a valid tax stamp – results in both federal prosecution and state charges under SD Codified Law §23‑22‑2, which criminalizes unlawful possession of NFA items. Conversely, compliance with the federal process automatically satisfies state obligations. Law‑enforcement agencies in the state routinely verify ATF certification before allowing suppressor use at public ranges.
Recent Legislative Proposals
In early 2026, Senate Bill 128 was introduced to create a “South Dakota Suppressor Incentive Program” that would provide a $100 rebate on the federal tax stamp for residents who complete a certified hearing‑conservation course. The bill has bipartisan support but has not yet been enacted. If passed, the rebate would further lower the financial barrier while maintaining strict adherence to federal law.
Conclusion
Under the 2026 federal rules, suppressors are legal in South Dakota provided owners obtain the required federal tax stamp, pass the background check, and respect the state’s reliance on federal NFA standards. The absence of a state‑level ban, coupled with the streamlined federal process, makes lawful ownership increasingly accessible for hunters, sport shooters, and veterans seeking hearing protection.
Can a non‑resident purchase a suppressor in South Dakota?
Yes, a non‑resident may apply for a federal tax stamp while physically present in South Dakota, but the device must be exported to the purchaser’s home state after approval. The ATF requires a “transfer‑out” endorsement on the tax stamp before shipment.
What happens if I sell a suppressor without a tax stamp?
Selling a suppressor without a valid tax stamp violates the NFA and is a felony under both federal law and South Dakota’s §23‑22‑2. The seller faces up to ten years’ imprisonment and loss of any firearms rights.
Are there any age restrictions?
Federal law sets the minimum age at 21 for purchasing a suppressor. South Dakota follows this standard; anyone under 21 cannot legally acquire or possess a suppressor, even with parental consent.
Do suppressors need to be registered with South Dakota law enforcement?
No separate state registration is required. The ATF’s federal registration satisfies all legal obligations, and South Dakota law enforcement relies on the federal tax stamp for verification.
Can I use a suppressor for hunting in South Dakota?
Yes, South Dakota’s wildlife agencies permit suppressor use for hunting, provided the hunter complies with federal NFA regulations and the specific game‑type rules (for example, deer hunting may require a special permit in certain counties).