§ 922(g)(1) Unanimity Rule: Jury Need Not Agree on the Specific Firearm or Ammunition Possessed

1. Introduction

In United States v. Miguel Rivera, A/K/A Macho, the Second Circuit confronted a recurring structural problem in felon-in-possession prosecutions under 18 U.S.C. § 922(g)(1): when the indictment lists multiple firearms and/or ammunition in a single count, must the jury unanimously agree on which particular item the defendant possessed to return a valid guilty verdict?

Rivera, a convicted felon, was indicted in a one-count superseding indictment charging unlawful possession of: (i) a Romarm AK-type 7.62x39 semiautomatic rifle, (ii) approximately 30 rounds of 7.62x39 ammunition for that rifle, and (iii) a single 5.56x45 round found in his pocket. Rivera moved to dismiss on duplicity grounds and argued that, without a curative instruction requiring unanimity as to the specific item possessed, the jury could convict without agreeing on the same conduct. The district court denied dismissal and instructed that unanimity was required only as to possession of “a firearm or ammunition,” not which item. Rivera was convicted and sentenced to 60 months’ imprisonment and three years’ supervised release.

2. Summary of the Opinion

The Second Circuit affirmed. It held that, for § 922(g)(1), the identity of the specific firearm or ammunition is not an element of the offense. Rather, it is a “brute fact” (a means of satisfying the possession element). Therefore, the jury must be unanimous that the defendant possessed a firearm or ammunition, but need not unanimously agree on which item listed in the indictment he possessed. On that understanding, the indictment (even if arguably duplicitous in form) was not impermissibly duplicitous in a way that threatened a non-unanimous verdict. The Court also found the evidence sufficient, emphasizing Rivera’s confession and corroborating physical/forensic proof.

3. Analysis

3.1. Precedents Cited

A. Standards of review and trial posture

• United States v. Thompson, 896 F.3d 155 (2d Cir. 2018): supplied the appellate lens for evidentiary review after trial—facts are drawn from trial evidence “viewed in the light most favorable to the government.” This framing mattered to Rivera’s sufficiency challenge because it constrained the court to defer to reasonable inferences favoring guilt.
• United States v. Kandic, 134 F.4th 92 (2d Cir. 2025): provided the de novo standard for preserved duplicity challenges and the baseline definition: “two or more distinct crimes should not be alleged in a single count.”
• United States v. Kopstein, 759 F.3d 168 (2d Cir. 2014) and United States v. Atilla, 966 F.3d 118 (2d Cir. 2020): supported de novo review of preserved challenges to jury instructions and insufficiency claims.

B. The Second Circuit’s duplicity framework

• United States v. Olmeda, 461 F.3d 271 (2d Cir. 2006): played a dual role. First, it reinforced that “duplicitous pleading…is not presumptively invalid.” Second, its discussion of when “multiple charges may well be warranted” (e.g., acquisition on different occasions or storage at different sites) served as Rivera’s main attempted hook for arguing separate “units of possession.” The panel distinguished that idea from the unanimity question presented here: even if separable charges might have been possible, that does not convert the item’s identity into an element requiring jury unanimity.
• United States v. Margiotta, 646 F.2d 729 (2d Cir. 1981) (quoting United States v. Murray, 618 F.2d 892 (2d Cir. 1980)): supplied the core policy lens for duplicity—avoid uncertainty in general verdicts, avoid non-unanimity risk, ensure notice, guide sentencing, and prevent double jeopardy. The panel used these policy considerations to explain why, even assuming arguendo duplicity in form, the pleaded count did not create the particular harm Rivera claimed: a non-unanimous verdict on an element.

C. Unanimity doctrine: elements vs means (“brute facts”)

• Ramos v. Louisiana, 590 U.S. 83 (2020): reaffirmed unanimity as a core Sixth Amendment requirement, anchoring the panel’s constitutional framing.
• Richardson v. United States, 526 U.S. 813 (1999): the decisive authority. Richardson distinguishes unanimity as to “elements” from disagreements about “means” (illustrated by the knife-versus-gun robbery hypothetical). The Second Circuit imported Richardson’s vocabulary to § 922(g)(1), classifying the particular firearm/ammo as an “underlying brute fact,” not an element.
• United States v. Kozeny, 667 F.3d 122 (2d Cir. 2011): cited as an in-circuit recognition of Richardson’s “brute fact” concept, reinforcing that the Second Circuit already accepts the elements/means distinction in principle.

D. Sister-circuit § 922(g) unanimity decisions adopted by the Second Circuit

• United States v. Verrecchia, 196 F.3d 294 (1st Cir. 1999): the principal template. Verrecchia held that under § 922(g)(1) “the element of the crime is simply the possession of any firearm,” so jurors need not agree on the specific firearm. The Second Circuit adopted this logic and applied it equally to ammunition.
• United States v. Talbert, 501 F.3d 449 (5th Cir. 2007); United States v. DeJohn, 368 F.3d 533 (6th Cir. 2004); United States v. Pollock, 757 F.3d 582 (7th Cir. 2014); United States v. Morris, 131 F.4th 1288 (11th Cir. 2025): cited to show broad post-Richardson consensus. The Second Circuit expressly “join[ed] these Circuits” and aligned its rule with theirs, giving the holding immediate persuasive force beyond the circuit.

E. Sufficiency-of-evidence and credibility rules

• United States v. Landesman, 17 F.4th 298 (2d Cir. 2021): supplied the “heavy burden” sufficiency standard, emphasizing deference to jury credibility determinations and permissible inferences.
• United States v. Josephberg, 562 F.3d 478 (2d Cir. 2009): supported the proposition that assessing witness credibility is “solely within the province of the jury,” relevant to Rivera’s attempt to undermine the detective’s confession testimony.

3.2. Legal Reasoning

The court’s reasoning proceeds in three linked steps:

1. Start with unanimity’s object: elements, not evidentiary details. Drawing from Ramos and Richardson, the panel framed unanimity as a requirement that the jury unanimously find each statutory element proved beyond a reasonable doubt. The critical question is whether “which firearm/ammunition” is an element or merely a means of proving the “possession” element.
2. Read the statute’s element as “possession of any firearm or ammunition.” Following Verrecchia’s “plain language” approach, the court treated § 922(g)(1) as criminalizing possession by a prohibited person of “any firearm” or “any ammunition” affecting commerce. The statute does not make the item’s identity (serial number, caliber, or model) a required component of guilt.
3. Classify item identity as a “brute fact” (means), eliminating the claimed non-unanimity risk. Under Richardson, jurors may disagree about the factual route (means) so long as they agree on the element. Thus, even if some jurors believed Rivera possessed the rifle and others believed he possessed only the single 5.56 round, unanimity is satisfied if all jurors agreed he possessed at least one prohibited “firearm or ammunition.” On that premise, the court concluded that the indictment and instruction did not threaten a constitutionally defective general verdict.

The court then addressed Rivera’s fallback: that the government presented “two units of possession” (rifle/7.62 ammo versus the solitary 5.56 round), so the jury needed unanimity as to each “unit.” The panel’s response was categorical: the fact that prosecutors could have charged separate counts (a possibility discussed in Olmeda) does not transform item identity into an element. Put differently, the availability of alternative charging strategies does not alter what the statute makes essential to conviction.

Finally, on sufficiency, the panel applied Landesman’s deferential standard and held the evidence ample, citing (i) Detective Sanchez’s testimony about Rivera’s “detailed, unequivocal confession,” (ii) the jury’s prerogative under Josephberg to credit that testimony, and (iii) corroborating exhibits and forensic/scene testimony supporting possession.

3.3. Impact

• Second Circuit rule on § 922(g)(1) unanimity is now explicit. The decision squarely resolves an important doctrinal gap: in this Circuit, juries need not unanimously agree on the specific gun or ammunition, only that the defendant possessed a firearm or ammunition as charged.
• Limits duplicity attacks in multi-item, single-count § 922(g) indictments. Defendants frequently deploy duplicity to argue that a general verdict may hide disagreement about which act occurred. This opinion narrows that argument where the supposed “acts” are simply different items constituting alternative means of satisfying the possession element.
• Charging discretion expands without mandatory special unanimity instructions. Prosecutors may continue to plead multiple firearms/ammunition in one count (particularly where contemporaneous seizure suggests a single possession episode) without risking reversal based solely on the jury’s failure to agree on the exact item.
• Future litigation shifts to “separate episodes” and other doctrines. The opinion does not erase all unit-of-prosecution disputes. It implies that when the government genuinely prosecutes distinct temporal/spatial possession episodes, defendants may still contest multiplicity/double jeopardy or seek clarity on what “act of possession” is being tried—just not by reframing item identity as an element.

4. Complex Concepts Simplified

• Duplicity: Charging two distinct crimes in one count. The problem is not mere drafting style; it is whether the single count creates practical harms—especially a risk that jurors convict without agreeing on the same crime, or ambiguity for sentencing/double jeopardy.
• Unanimity as to “elements” vs “means”: Jurors must agree on every element (what the statute requires). They need not agree on every detail (how the element happened), such as whether the threat in a robbery was made with a knife or gun (Richardson’s example).
• “Brute fact”: A concrete factual detail that helps prove an element but is not itself an element—here, the particular firearm model/caliber or the specific round of ammunition.
• “Unit of possession”: A way to describe distinct possession episodes (e.g., different times or storage locations). The court’s key point is that even if multiple episodes could be charged, that does not automatically require unanimity about which listed item was possessed when the statute’s element is simply possession of any firearm/ammunition.
• Sufficiency of the evidence: On appeal, the question is not whether the appellate judges are personally convinced, but whether a rational jury could find guilt beyond a reasonable doubt, giving deference to the jury’s credibility choices.

5. Conclusion

United States v. Miguel Rivera, A/K/A Macho establishes a clear Second Circuit rule: under 18 U.S.C. § 922(g)(1), the specific firearm or ammunition possessed is not an element of the offense. Accordingly, jurors must unanimously agree that the defendant possessed a firearm or ammunition, but they need not unanimously agree which particular item listed in the indictment he possessed. By adopting the “brute fact” framework of Richardson v. United States and aligning with United States v. Verrecchia and other circuits, the court significantly narrows duplicity-and-unanimity attacks on multi-item § 922(g)(1) counts, while leaving room for future disputes where the government truly prosecutes distinct possession episodes.