Legal Status in Mississippi
The Mossberg Shockwave is currently legal to own, purchase, and transport in Mississippi as of 2026. The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) classified the 1‑½‑inch barrel model as a “firearm” rather than a short‑barreled shotgun, exempting it from the National Firearms Act’s registration requirements. Mississippi statutes likewise do not categorically prohibit “firearms” with such barrel lengths, provided they are not used in the commission of a crime. Consequently, residents may possess a Shockwave without needing a tax stamp or state‑level special permit, although typical background‑check procedures for firearm sales still apply. [ATF 2024 ruling; Mississippi Code § 97‑43‑5]
Key Points to Consider
- ATF Determination – In July 2024 the ATF affirmed that the Shockwave’s overall length (over 26 inches) and lack of a shotgun‑type bore exclude it from the NFA definition of a short‑barreled shotgun.
- State Law Alignment – Mississippi’s firearm regulations mirror federal definitions, focusing on barrel length for rifles and shotguns but not for pistols or “firearms” with unconventional dimensions.
- Purchasing Requirements – Federal background checks under the Gun Control Act remain mandatory; private sales between unlicensed individuals are permissible under state law.
- Concealed Carry – The Shockwave is not eligible for a concealed‑carry permit because it is classified as a pistol‑style firearm, and Mississippi law reserves such permits for handguns meeting specific criteria.
- Future Legislative Risks – Legislative proposals introduced in the 2025 session aimed to re‑classify any firearm with a barrel shorter than 3 inches as an “assault weapon,” but none passed, leaving the current status unchanged.
Frequently Asked Questions
Is a federal tax stamp required for the Mossberg Shockwave?
No. Because the ATF does not consider the Shockwave a short‑barreled shotgun, the NFA tax stamp and registration are unnecessary. Owners only need to satisfy standard background‑check obligations.
Can I carry the Shockwave openly in public?
Mississippi permits open carry of long guns without a permit, and the Shockwave qualifies as a firearm rather than a shotgun, so open carry is legal provided the carrier is not prohibited from possessing firearms.
Does Mississippi require a special permit for “pistol‑style” firearms?
Only handguns that meet the state’s definition of a pistol require a concealed‑carry permit. The Shockwave, although pistol‑styled, is not classified as a handgun, so no special permit is needed for possession or transport.
What if I travel with the Shockwave to another state?
Interstate travel is subject to the destination state’s laws. While Mississippi permits the firearm, states such as California and New York consider the Shockwave an unlawful short‑barreled shotgun, so crossing state lines without compliance could result in criminal charges.
Could future legislation ban the Shockwave in Mississippi?
Potentially. Bills introduced in 2025 sought to broaden “assault weapon” definitions to include firearms with barrels under 3 inches. Although those bills failed, a future session could succeed, which would alter the legal status of the Shockwave. Staying informed of legislative developments is advisable.