Texas SB 80 (Semi-Automatic Firearms Ban) — Legal Analysis

What the bill does.

• Creates Penal Code §46.055, defining "assault weapon" by features. The definition sweeps in most AR- and AK-pattern rifles and every semi-automatic shotgun that takes a detachable magazine. It also covers pistols with a threaded barrel or a barrel shroud, and any part or combination of parts from which one can be assembled.

• Makes it a Class A misdemeanor for a person under 21 to knowingly buy or possess one. Police and military have a defense, and so does anyone who lawfully possessed the weapon on August 31, 2027.

• Amends §46.06 so that transferring an assault weapon to anyone under 21 is a state jail felony. Under-18 transfers of other firearms keep the parental-consent defense; under-21 transfers of assault weapons get none. Where it is most exposed.

• Fifth Circuit precedent: Reese v. ATF holds that 18-to-20-year-olds are among "the people" and that the right to keep arms includes buying them. It also discounts the 19th-century age laws states usually rely on. That precedent binds every federal court in Texas.

• Possession, not just purchase: The under-21 laws other circuits upheld restricted sales. SB 80 also bans possession, including on one's own property and while hunting.

• The rifles themselves: The Supreme Court agreed on June 30, 2026 to decide whether states may ban AR-15-type rifles. Its ruling will likely come before SB 80 could take effect. Drafting conflicts. SB 80 and SB 308 each create a new Penal Code §46.055. SB 80 and HB 173 each rewrite §46.06(a)(2) differently. The Legislature would have to reconcile them if more than one advances.

This memo summarizes public law and litigation as of the date above. It is not legal advice.

What the bill says

SB 80, by Sen. Zaffirini, has two operative parts. One is a new under-21 purchase-and-possession offense. The other is a new under-21 transfer offense added to the existing ban on unlawful transfers of weapons.¹

The "assault weapon" definition (new §46.055(a))

Category	Covered if it has…	Practical reach
(1) Semi-auto centerfire rifle that takes a detachable magazine	Any one of: protruding pistol grip, folding or telescoping stock, thumbhole stock, second handgrip, flash suppressor, or grenade or flare launcher	Most AR- and AK-pattern rifles as commonly sold
(2) Semi-auto centerfire rifle with a fixed magazine	Capacity over 10 rounds	Fixed-magazine rifles built for restrictive states
(3) Semi-auto centerfire rifle	Overall length under 30 inches	Short rifles and many "pistol"-style builds
(4) Semi-auto shotgun	Ability to take a detachable magazine, nothing more	Every detachable-magazine semi-auto shotgun
(5) Semi-auto shotgun with folding or telescoping stock	A thumbhole stock or second handgrip	Tactical-style shotguns
(6) Semi-auto pistol that takes a detachable magazine	Any one of: second handgrip, magazine outside the grip, threaded barrel, or barrel shroud	Many common handguns sold with threaded barrels; AR- and AK-pattern pistols
(7) Semi-auto pistol with a fixed magazine	Capacity over 10 rounds	Uncommon
(8) Revolving-cylinder shotgun	—	Rare
(9) Conversion kit, part or combination of parts	Anything from which a covered weapon "can be assembled" or into which a firearm "may be converted"	Stripped receivers, uppers, stocks and many accessories

The rifle features in category (1) follow the one-feature model used in several Northeastern state bans. The 1994 federal ban required two features. The shotgun category (4) has no feature test at all.

Offenses, penalties and defenses

Provision	Who	Conduct	Penalty	Defenses
New §46.055(b)(1)	Person under 21	Knowingly buys an assault weapon	Class A misdemeanor (up to 1 year, fine up to $4,000)²	Buying for official duties as a peace officer or member of the armed forces or state military forces
New §46.055(b)(2)	Person under 21	Knowingly possesses an assault weapon	Same	Official duties or travel to and from duty; or lawful possession on August 31, 2027
Amended §46.06(a)(2)(B)	Anyone	Intentionally or knowingly sells, rents, leases or gives (or offers to) an assault weapon to someone under 21	State jail felony (180 days to 2 years, fine up to $10,000)³	Recipient showed evidence of being a peace officer or service member
Amended §46.06(a)(2)(A)	Anyone	Same, for other firearms, clubs or knives, to someone under 18	Existing penalties	Existing parental-consent defense

Notable gaps and choices

1. No parental, hunting, range or property exceptions. A 19-year-old could not use a family semi-automatic shotgun on the family's own land, even with a parent present. HB 173, the House's narrower under-21 bill, does exempt supervised loans, use on the lender's property, ranges, hunting and competitions.⁴

2. Veterans get no exception. HB 173 covers honorably discharged veterans. SB 80 covers only those currently serving, and only for official duties.

3. The grandfather clause covers possession only. It protects someone who lawfully held the weapon on August 31, 2027. It does not let that person buy another one, and it does not help anyone who turns 18 after that date.

4. Section-number collision. SB 308 also creates a new §46.055, for 3D-printed gun files.⁵ SB 80 and HB 173 also rewrite §46.06(a)(2)(A)–(B) with different texts.⁴ If more than one passes, the conflict-resolution rules of the Code Construction Act would govern, and the result could be messy. Notes

5. S.B. 80, 90th Leg., R.S. (2027) (introduced), §§1–5 (copy provided by the requester).

6. Tex. Penal Code §12.21.

7. Tex. Penal Code §12.35.

8. H.B. 173, 90th Leg., R.S. (2027) (introduced), §1 (proposed §46.06(a)(2), (c-1)) (copy provided by the requester).

9. S.B. 308, 90th Leg., R.S. (2027) (introduced), §3 (copy provided by the requester).

Second Amendment

SB 80 raises two Second Amendment questions at once. Are 18-to-20-year-olds fully protected? And are the guns it covers protected "arms"? The Fifth Circuit has answered the first question yes. The Supreme Court will take up the second this term.

The framework

Heller protects an individual right to keep arms in common use for lawful purposes, especially handguns in the home.¹ It also called "conditions and qualifications on the commercial sale of arms" presumptively lawful, a passage states rely on to defend purchase-age laws.¹ Bruen asks whether the text covers the conduct, then whether the law fits the nation's historical tradition of firearm regulation.² Rahimi requires analogues that share a modern law's "why" and "how."³

Are 18-to-20-year-olds "the people"? The circuit split

Case	Court	Law	Result
Reese v. ATF (2025)⁴	5th Cir.	Federal ban on dealer handgun sales to 18–20	Struck down; 18–20 are "the people" and purchase is covered
Lara v. Comm'r, Pa. State Police (2025)⁵	3d Cir.	Pennsylvania carry limits for 18–20	Struck down; cert denied June 30, 2026⁶
Worth v. Jacobson (2024)⁷	8th Cir.	Minnesota carry-permit age of 21	Struck down; cert denied 2025
NRA v. Bondi (2025) (en banc)⁸	11th Cir.	Florida ban on all firearm purchases under 21	Upheld 8–4; cert denied June 30, 2026
McCoy v. ATF (2025)⁹	4th Cir.	Federal dealer handgun-sale ban	Upheld; cert denied June 30, 2026
Rocky Mountain Gun Owners v. Polis (2024)¹⁰	10th Cir.	Colorado ban on firearm purchases under 21	Upheld as a condition on commercial sale

The Supreme Court declined to resolve this split on June 30, 2026. It turned away the Florida purchase-ban case and the federal handgun-sale cases, and it left Pennsylvania's loss in place.⁶ Justice Thomas would have granted review.¹¹ The split will therefore govern SB 80 if it passes.

In Texas, Reese controls. The Fifth Circuit held that the plain text covers 18-to-20-year-olds and that the right to keep arms implies the ability to buy them.⁴ It overruled its own 2012 decision upholding the same federal law.⁴ It also gave little weight to post-Reconstruction age laws, because Bruen looks to the Founding.⁴ Before Reese, a federal court in Fort Worth had already struck down Texas's own bar on 18-to-20-year-olds carrying handguns.¹²

Where Texas would aim its defense. The Eleventh Circuit upheld Florida's law by relying on Founding-era common-law rules of legal infancy, under which minors could not make binding contracts.⁸ The Tenth Circuit treated a purchase age as a condition on commercial sale outside the Amendment's text.¹⁰ Both arguments are about sales. Neither helps a ban on possession.

Are the covered guns protected "arms"?

The en banc Third Circuit held in July 2026 that New Jersey's ban on semi-automatic rifles it labels "assault firearms" violates the Second Amendment.¹³ It found the rifles in common use, with at least 24 million AR-platform rifles in civilian hands.¹⁴ The Seventh Circuit went the other way eight days earlier, upholding Illinois's ban.¹⁵

On June 30, 2026, the Supreme Court granted review in Viramontes v. Cook County and Grant v. Higgins, on whether state and local bans on AR-15-type rifles are constitutional.¹⁶ A decision is expected by the end of June 2027, before SB 80's September 1, 2027 effective date.

Two outcomes matter for SB 80:

• If the Court protects these rifles, SB 80 would be banning protected arms for a group of protected people. That would be the hardest version of the law to defend.
• If the Court upholds rifle bans, Texas could argue that an age limit on unprotected weapons is easier still. But SB 80 also covers pistols with threaded barrels and ordinary semi-automatic shotguns. Handguns are the "quintessential self-defense weapon" under Heller,¹ and semi-auto shotguns are standard hunting and home-defense guns. A rifle-focused ruling would not cover those categories.

Historical tradition

At the Founding, militia laws commonly enrolled men from age 18 and required them to supply their own guns.⁴ States have no Founding-era law barring 18-to-20-year-olds from possessing firearms. Their best evidence is a wave of mid- and late-19th-century state laws barring sales to minors, which the Eleventh Circuit credited and the Fifth Circuit did not.⁴ ⁸ In Texas federal court, the Fifth Circuit's view controls.

Notes

1. District of Columbia v. Heller, 554 U.S. 570, 626–27 & n.26, 629 (2008).
2. N.Y. State Rifle & Pistol Ass'n v. Bruen, 597 U.S. 1 (2022).
3. United States v. Rahimi, 602 U.S. 680 (2024).
4. Reese v. Bureau of Alcohol, Tobacco, Firearms & Explosives, 127 F.4th 583 (5th Cir. 2025) (opinion); see Snell & Wilmer and ABA Journal. Remedy proceedings continue on remand as FPC v. ATF (Ammoland).
5. Lara v. Comm'r, Pa. State Police, 125 F.4th 428 (3d Cir. 2025).
6. Reuters via GV Wire; FPC.
7. Worth v. Jacobson, 108 F.4th 677 (8th Cir. 2024), cert. denied, No. 24-782 (Apr. 21, 2025).
8. Nat'l Rifle Ass'n v. Bondi, 133 F.4th 1108 (11th Cir. 2025) (en banc), cert. denied sub nom. NRA v. Glass, No. 24-1185 (June 30, 2026); see Snell & Wilmer.
9. McCoy v. ATF, 140 F.4th 568 (4th Cir. 2025), cert. denied (June 30, 2026); see SCOTUSblog.
10. Rocky Mountain Gun Owners v. Polis, 121 F.4th 96 (10th Cir. 2024).
11. W. Va. Citizens Def. League v. ATF, No. 25-132 (cert. denied June 30, 2026) (Thomas, J., would grant) (SCOTUSblog).
12. Firearms Policy Coal., Inc. v. McCraw, 623 F. Supp. 3d 740 (N.D. Tex. 2022); see Duke Center for Firearms Law.
13. Ass'n of N.J. Rifle & Pistol Clubs, Inc. v. Att'y Gen. N.J. (consolidated with Cheeseman v. Davenport), 183 F.4th 211 (3d Cir. 2026) (en banc) (opinion).
14. AccurateShooter Bulletin (summarizing the court's common-use findings).
15. Barnett v. Raoul (7th Cir. July 9, 2026); see ConcealedCarry.com; Bevis v. City of Naperville, 85 F.4th 1175 (7th Cir. 2023).
16. Viramontes v. Cook County, No. 25-238; Grant v. Higgins, No. 25-566 (cert. granted June 30, 2026); see ABC News/GMA.

Possession, grandfathering and parts

The possession ban is the bill's most aggressive feature and its weakest point. Every under-21 law upheld on appeal since Bruen limited sales; none barred possession of lawfully obtained guns.

What "possess" reaches

Texas defines possession as "actual care, custody, control, or management."¹ That reaches more than ownership. A 19-year-old who borrows a parent's semi-automatic shotgun for a dove hunt, or keeps a family rifle in a shared truck, could be charged. The bill offers no loan, supervision, hunting or property exception, unlike HB 173.²

That breadth matters under Rahimi. The Court upheld disarming people found to pose a credible threat to others, after a judicial finding.³ SB 80 disarms an entire age group without any finding, and on private land as well as in public. In the Fifth Circuit, the analogue gap is wide.

The grandfather clause

The defense in §46.055(e)(2) covers anyone who "lawfully possessed the assault weapon on August 31, 2027." Three points follow.

1. It protects a specific gun, not a person. A grandfathered 19-year-old cannot buy, borrow or inherit a second covered gun until age 21.
2. It protects no one who turns 18 after the effective date. For them, the ban is total until 21.
3. Because existing owners keep their guns, a takings challenge is unlikely. The grandfather clause trades that risk for an uneven, age-based line, which may itself be cited to undercut the public-safety rationale.

The parts category

Category (9) covers any "conversion kit, part, or combination of parts from which an assault weapon can be assembled." Read literally, that reaches a stripped AR lower receiver, an AR upper, a folding stock or a threaded barrel. An 18-year-old gunsmithing apprentice or parts-counter employee who handles inventory could be in "possession." The official-duty defense covers only police and the military.

Category (9) also lets the transfer offense in §46.06(a)(2)(B) reach anyone who sells a covered part to a 20-year-old. That conduct would be a state jail felony.⁴ A feature-based definition that reaches common accessories invites both overbreadth and vagueness attacks, discussed next.

Notes

1. Tex. Penal Code §1.07(a)(39).
2. H.B. 173, 90th Leg., R.S. (2027) (introduced), proposed §46.06(c-1)(2).
3. United States v. Rahimi, 602 U.S. 680 (2024).
4. Tex. Penal Code §12.35 (state jail felony range).

Vagueness and mens rea

Feature-based definitions have mostly survived vagueness challenges, so this is a secondary line of attack. SB 80's parts category and its knowledge requirement are the exceptions worth watching.

How courts have treated feature tests

• The Second Circuit upheld most of New York's and Connecticut's feature terms against vagueness challenges. It struck New York's reference to a "muzzle 'break'," a term with no settled meaning.¹
• The en banc Fourth Circuit rejected a vagueness challenge to Maryland's ban on "copies" of listed rifles.²
• The Sixth Circuit struck a Columbus ordinance that banned listed models and their "variations," because owners could not tell what was covered.³ SB 80 uses feature language like New York's, which helps Texas. Its weak point is category (9). "Combination of parts from which an assault weapon can be assembled" has no limiting principle. Almost any semi-automatic rifle part can contribute to some covered build. That resembles the open-ended "variations" language the Sixth Circuit rejected more than the feature lists the Second and Fourth Circuits upheld.

Other phrases to watch:

Phrase	Likely dispute
"protrudes conspicuously beneath the action"	Whether a modern straight-back grip qualifies
"capacity to accept a detachable magazine"	Whether a fixed-magazine rifle that can be converted counts
"threaded barrel capable of accepting" a suppressor or grip	Covers many factory pistols; owners may not know they qualify
"shroud that… permits the shooter to hold the firearm"	Whether a handguard counts as a shroud

What the state must prove the defendant knew

The offense requires that an under-21 person "knowingly" buy or possess an assault weapon. Texas law applies "knowingly" to the circumstances surrounding conduct.⁴ The bill does not say whether the state must prove the defendant knew the features that made the gun covered.

The Supreme Court read such a requirement into the federal machine-gun ban because ordinary gun ownership is otherwise innocent.⁵ It later required proof that a defendant knew his own prohibited status.⁶ A Texas court would likely require proof that the defendant knew the relevant features, such as a threaded barrel. That makes prosecutions harder, but it reduces the risk that the law is void for vagueness.⁷

Notes

1. N.Y. State Rifle & Pistol Ass'n v. Cuomo, 804 F.3d 242 (2d Cir. 2015).
2. Kolbe v. Hogan, 849 F.3d 114 (4th Cir. 2017) (en banc).
3. Springfield Armory, Inc. v. City of Columbus, 29 F.3d 250 (6th Cir. 1994).
4. Tex. Penal Code §6.03(b).
5. Staples v. United States, 511 U.S. 600 (1994).
6. Rehaif v. United States, 588 U.S. 225 (2019).
7. Johnson v. United States, 576 U.S. 591 (2015); Grayned v. City of Rockford, 408 U.S. 104 (1972).

Texas and federal backdrop

Today Texas law sets no age limit for possessing rifles or shotguns, and 18-year-olds can buy long guns from dealers under federal law. SB 80 would make Texas stricter than federal law for this class of guns.

Source	Rule today	Effect of SB 80
Tex. Penal Code §46.06(a)(2)	Bars transferring any firearm to someone under 18, with a parental-consent defense¹	Adds an under-21 transfer ban for assault weapons, with no parental defense
Federal dealer rules, 18 U.S.C. §922(b)(1)	Dealers may sell long guns at 18; handgun sales at 21 were struck down in the Fifth Circuit²	Overrides that for covered rifles, shotguns and pistols
Tex. Const. art. I, §23	"Every citizen shall have the right to keep and bear arms"; the Legislature may regulate "the wearing of arms" to prevent crime	Does not authorize a ban on keeping arms by an adult age group
FPC v. McCraw (N.D. Tex. 2022)	Struck Texas's bar on 18–20 carrying handguns³	Signals how Texas federal courts read age limits

Where the cases would be heard

Federal court. A challenger would sue the DPS director and district attorneys, as in McCraw. Every federal court in Texas is bound by Reese.² Texas's best hope there would be distinguishing Reese as a dealer-sale case, which is hard for a possession ban.

State court. A defendant charged under §46.055 could raise the Second Amendment and art. I, §23. Texas courts are not bound by Fifth Circuit precedent on federal questions, but they generally treat it as persuasive. Texas's highest criminal court would decide such a case on its own.

Notes

1. Tex. Penal Code §46.06(a)(2), (c) (current law, as reproduced in S.B. 80 §2).
2. Reese v. ATF, 127 F.4th 583 (5th Cir. 2025); see Snell & Wilmer.
3. Firearms Policy Coal., Inc. v. McCraw, 623 F. Supp. 3d 740 (N.D. Tex. 2022) (opinion).

Other states' laws and how they fared

SB 80 combines two kinds of law that courts have treated differently: under-21 limits and assault-weapon bans. Under-21 purchase bans have usually survived outside the Fifth Circuit. Under-21 carry bans have usually fallen. Assault-weapon bans are now split, with the Supreme Court set to decide.

Jurisdiction	Law	Court	Outcome
Florida	Ban on all firearm purchases under 21	11th Cir. (en banc, 2025)	Upheld 8–4; cert denied June 30, 2026¹
Colorado	Ban on all firearm purchases under 21	10th Cir. (2024)	Upheld as a commercial-sale condition²
California	Ban on semi-auto centerfire rifle sales under 21	9th Cir. (2022)	Held likely unconstitutional before Bruen; vacated and remanded after it³
Pennsylvania	Carry limits for 18–20 during emergencies	3d Cir. (2025)	Struck; cert denied June 30, 2026⁴
Minnesota	Carry-permit age of 21	8th Cir. (2024)	Struck; cert denied 2025⁵
Texas	Carry limits for 18–20	N.D. Tex. (2022)	Struck⁶
New Jersey	Assault-firearm ban (all ages)	3d Cir. (en banc, July 2026)	Struck; cert petition filed⁷
Illinois	Assault-weapon ban (all ages)	7th Cir. (July 2026)	Upheld⁸
Cook County, Ill. (Viramontes); a second ban (Grant)	Assault-weapon bans (all ages)	U.S. Supreme Court	Cert granted June 30, 2026 (Viramontes, Grant)⁹
Texas (SB 80)	Under-21 purchase and possession ban on a broad assault-weapon class; under-21 transfer felony	—	—

Two lessons for SB 80.

1. Purchase is defensible elsewhere; possession is not. The Florida and Colorado laws that survived let 18-to-20-year-olds keep and use guns they obtained lawfully, such as gifts from family. SB 80 bans that too.

2. The California case is the closest match, and it went badly for the state. It involved the same kind of under-21 limit on semi-automatic rifles, and a Ninth Circuit panel found it likely unconstitutional even under the more lenient pre-Bruen test.³ The opinion was vacated, so it is not precedent, but challengers would cite its reasoning. Notes

3. Nat'l Rifle Ass'n v. Bondi, 133 F.4th 1108 (11th Cir. 2025) (en banc), cert. denied sub nom. NRA v. Glass, No. 24-1185 (June 30, 2026); Law360.

4. Rocky Mountain Gun Owners v. Polis, 121 F.4th 96 (10th Cir. 2024); see Snell & Wilmer.

5. Jones v. Bonta, 34 F.4th 704 (9th Cir. 2022), vacated and remanded, 47 F.4th 1124 (9th Cir. 2022). Verify the subsequent history before citing.

6. Lara v. Comm'r, Pa. State Police, 125 F.4th 428 (3d Cir. 2025); FPC.

7. Worth v. Jacobson, 108 F.4th 677 (8th Cir. 2024), cert. denied, No. 24-782 (Apr. 21, 2025).

8. Firearms Policy Coal., Inc. v. McCraw, 623 F. Supp. 3d 740 (N.D. Tex. 2022).

9. Ass'n of N.J. Rifle & Pistol Clubs, Inc. v. Att'y Gen. N.J., 183 F.4th 211 (3d Cir. 2026) (en banc); New Jersey's cert petition.

10. Barnett v. Raoul (7th Cir. July 9, 2026); ConcealedCarry.com.

11. Viramontes v. Cook County, No. 25-238; Grant v. Higgins, No. 25-566; ABC News/GMA.

Assessment

If SB 80 passes as filed, a federal challenge in Texas would very likely defeat the possession ban and probably the purchase ban, because Reese binds those courts. The transfer felony would likely fall with them. The Supreme Court's rifle-ban decision, expected by June 2027, could raise or lower the stakes, but it would not resolve the age question.

Provision	Main challenge	Litigation risk	Why
Under-21 possession ban, §46.055(b)(2)	Second Amendment	Very high	Reese covers 18–20; no upheld law bans possession; no family, hunting or property exceptions
Under-21 purchase ban, §46.055(b)(1)	Second Amendment	High in Texas federal court	Reese treats buying as covered and rejects the 19th-century analogues the 11th Circuit credited
Transfer felony, §46.06(a)(2)(B)	Second Amendment (buyers' rights)	High	Rises or falls with the purchase ban
Shotgun and pistol categories	Common use	High	Ordinary hunting and self-defense guns, beyond any rifle-ban ruling
Parts category (9)	Vagueness, overbreadth	Medium	No limiting principle; resembles the "variations" language the 6th Circuit struck
Rifle feature categories	Vagueness	Low	Feature lists have mostly survived

Political context

The November 2026 elections improved SB 80's chances of passing. Democrats won the governor's and lieutenant governor's offices and the Texas House, effective in January.¹ ² This memo did not check the Senate's partisan makeup for 2027, which will shape the bill's path. The NRA has listed SB 80 first among the prefiled bills it opposes, describing it as a ban on commonly owned semi-automatic firearms.³ That description omits that the bill applies only to people under 21.

Open questions to watch

• How the Supreme Court rules in Viramontes and Grant
• Whether another under-21 case reaches the Supreme Court after its June 30, 2026 denials
• How the remand in Reese (now FPC v. ATF) resolves the scope of relief
• Whether SB 80, SB 308 and HB 173 are reconciled, or one yields its section numbers Notes

1. KUT; FOX 4.
2. KUT.
3. NRA-ILA, Nov. 9, 2026.

Sources

Primary texts: SB 80, SB 308 and HB 173 as filed (copies provided by the requester); Reese v. ATF opinion; FPC v. McCraw opinion; Third Circuit en banc opinion. Case citations without links are from standard reporters; check them before relying on them in a filing.