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State SBR law

Are short-barreled rifles legal in Massachusetts? (2026)

By , EditorUpdated How we verifyEditorial standards

We found no Massachusetts section that bans short-barreled rifles by name. The state does define "rifle" with a 16-inch barrel line, and it makes owning a sawed-off shotgun a felony. A rifled gun with a shorter barrel isn't a "rifle" under the state definition, so it falls under the general firearm rules. Here is what the statutes say and what we could not verify.

Not legal advice. This page summarizes Massachusetts statutes and federal guidance as of the date above. Local rules and your own circumstances can matter. Check with your dealer or a Massachusetts attorney if you're unsure.

The short answer

The statute

We found no SBR provision in the sections we read. The provision that shows what is covered is the sawed-off shotgun rule in M.G.L. c. 269 § 10, paragraph (c):

"or whoever owns, possesses or carries on his person, or carries on his person or under his control in a vehicle, a sawed-off shotgun, automatic part, bump stock, rapid-fire trigger activator or trigger modifier"

"shall be punished by imprisonment in the state prison for life, or for any term of years provided that any sentence imposed under the provisions of this paragraph shall be subject to the minimum requirements of paragraph (a)."

Paragraph (a) of the same section covers anyone who "knowingly has in his possession; or knowingly has under his control in a vehicle; a firearm, loaded or unloaded, as defined in section one hundred and twenty-one of chapter one hundred and forty" without meeting one of the listed conditions, such as "having in effect a license to carry firearms issued under section one hundred and thirty-one of chapter one hundred and forty". The definitions themselves are in M.G.L. c. 140 § 121.

How Massachusetts defines an SBR

The state statutes we read have no SBR definition. Federal law (26 U.S.C. 5845) uses the 16-inch barrel and 26-inch overall length lines. Section 121 defines a rifle as "a firearm having a rifled bore with a barrel length equal to or greater than 16 inches and capable of discharging a shot or bullet for each pull of the trigger."

The general firearm definition in § 121 lists "a stun gun, pistol, revolver, rifle, shotgun, sawed-off shotgun, large capacity firearm, assault-style firearm and machine gun, loaded or unloaded". It reaches any such gun "which is designed to or may readily be converted to expel a shot or bullet". A rifled gun with a barrel under 16 inches is not a rifle under § 121, so it falls under that general definition and its licensing rules.

The sawed-off shotgun definition covers only shotguns: "any firearm made from a shotgun, whether by alteration, modification or otherwise, if such firearm as modified has one or more barrels less than 18 inches in length or as modified has an overall length of less than 26 inches."

Penalty

We found no SBR-specific penalty. For a sawed-off shotgun, § 10(c) sets state prison for life or any term of years, subject to the minimum requirements of paragraph (a). The penalty for a violation of paragraph (a) is Not yet verified here, because the text we read was cut off before it.

Is legality tied to federal registration?

Not in the text we read. We found no federal-registration exception in the sawed-off shotgun provision, and no SBR provision that mentions federal law. The § 121 definitions refer to federal law only for items such as undetectable firearms and serial numbers.

ATF's October 9, 2026 open letter says it stopped enforcing Form 1 and Form 4 approval and registration for SBRs, SBSs, suppressors and AOWs. Voluntary forms are still processed. We found no Massachusetts Attorney General or State Police statement on SBRs, so how the state wording applies to an SBR is untested and Not yet verified. Our Massachusetts suppressor guide covers the state's separate suppressor ban, which does not depend on registration.

Hunting

SBR-specific hunting rules: Not yet verified. Per our suppressor guide, suppressors are illegal for civilians in Massachusetts, so it has no suppressor hunting rules to report.

Other laws that interact

Braced pistols

The state statutes cited here don't mention pistol braces. See our pistol brace guide for the federal picture.

Federal process in 2026

ATF says there is no automatic grandfathering if enforcement resumes. Full detail is on our SBR rules 2026 page, and you can compare states with the state NFA checker.

Checked against the official statute text on October 28, 2026.

Frequently asked questions

Are short-barreled rifles legal in Massachusetts?
We found no Massachusetts section that bans short-barreled rifles by name. A rifled gun with a barrel under 16 inches is not a rifle under M.G.L. c. 140 section 121, so it falls under the general firearm definition and its licensing rules. Confirm with an attorney.
Does Massachusetts define a short-barreled rifle?
Not in the sections we read. Section 121 defines a rifle as having a barrel length equal to or greater than 16 inches, and defines a sawed-off shotgun, which covers shotguns only.
What is the penalty for a sawed-off shotgun in Massachusetts?
Under M.G.L. c. 269 section 10(c), owning or possessing one is punishable by state prison for life or any term of years, subject to the minimum requirements of paragraph (a). We found no SBR-specific penalty.
Does Massachusetts tie SBR legality to federal registration?
We found no federal-registration exception and no SBR provision that mentions federal law. How the state wording applies after ATF's October 9, 2026 change is untested and not yet verified.
Can a short rifle be an assault-style firearm in Massachusetts?
Possibly. A short semi-automatic with two listed features may be an assault-style firearm under section 121, which section 131M restricts. Confirm with an attorney.

Sources

  1. M.G.L. c. 140 § 121 (definitions), Massachusetts Legislature
  2. M.G.L. c. 269 § 10, Massachusetts Legislature
  3. ATF Open Letter, Oct. 9, 2026 (PDF)
  4. ATF fact sheet: NFA Guidance: Liberty and Justice for All (PDF; undated)
  5. ATF: Update to NFA Transfer Guidance and FAQ (page last updated Oct. 16, 2026)
  6. 26 U.S.C. 5845: NFA definitions

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