Cornelius Coleman pleaded guilty to one count of being a felon in possession of a firearm, in violation of 18 U.S.C. § 922 (g)(1). The district court sentenced Coleman under the Armed Career Criminal Act (ACCA), 18 U.S.C. § 924 (e), to 15 years of imprisonment, the statutory minimum sentence. Coleman appeals, challenging the ACCA enhancement. Because Coleman did not object to the enhancement at sentencing, we review for plain error, affirming his sentence unless he can show (1) an error; (2) that is plain; (3) that affects his substantial rights; and (4) that seriously affects "the fairness, integrity, or public reputation of judicial proceedings." United States v. Boman , 873 F.3d 1035 , 1040 (8th Cir. 2017) (quoting United States v. Olano , 507 U.S. 725 , 732, 113 S.Ct. 1770 , 123 L.Ed.2d 508 (1993) ).

To enhance a defendant's sentence under the ACCA, the court must identify three predicate convictions, either violent felonies or serious drug offenses, in the defendant's criminal history. Here, the district court applied the ACCA based on Coleman's 2006 Arkansas conviction for kidnapping and two prior convictions for serious drug offenses. On appeal, Coleman challenges the use of the kidnapping conviction as a predicate. Kidnapping is not an enumerated offense under the ACCA, so it may qualify as a violent felony only if it satisfies the ACCA's force clause, that is, if it "has as an element the use, attempted use, or threatened use of physical force against the person of another." § 924(e)(2)(B)(i). To determine whether a prior conviction meets this definition, "courts look to the elements of the crime of conviction, not the underlying facts." Boman , 873 F.3d at 1040 (citing Mathis v. United States , --- U.S. ----, 136 S.Ct. 2243 , 2248, 195 L.Ed.2d 604 (2016) ).

Arkansas Code § 5-11-102, the statute that criminalizes kidnapping, provides:

(a) A person commits the offense of kidnapping if, without consent, the person restrains another person so as to interfere substantially with the other person's liberty with the purpose of:

(1) Holding the other person for:

(A) Ransom or reward; or

(B) Any other act to be performed or not performed for the other person's return or release;

(2) Using the other person as a shield or hostage;

(3) Facilitating the commission of any felony or flight after the felony;

*594 (4) Inflicting physical injury upon the other person;

(5) Engaging in sexual intercourse, deviate sexual activity, or sexual contact with the other person;

(6) Terrorizing the other person or another person; or

(7) Interfering with the performance of any governmental or political function.

(b)(1) Kidnapping is a Class Y felony.

The government concedes that § 5-11-102 is overbroad, as one may commit the offense of kidnapping without using, attempting to use, or threatening to use physical force. 1 But the government argues that § 5-11-102 is divisible-that is, that the nefarious "purposes" listed in subsections (a)(1) through (a)(7) are elements of seven different crimes-and that Coleman was convicted under subsection (a)(6), which has as an element the use of physical force. To determine whether a statute lists elements of different crimes, or instead lists alternative means of committing a single crime, we look to the statute itself and state court decisions interpreting the statute. See Mathis , 136 S.Ct. at 2256 .

The text of § 5-11-102 names only one offense-kidnapping-and defines that offense as "a class Y felony" regardless of which nefarious purpose is used. The statutory text suggests, therefore, that subsections (a)(1) through (a)(7) list means, not elements. Cf. id. ("If statutory alternatives carry different punishments, then ... they must be elements.").

Arkansas courts treat the nefarious purposes listed in § 5-11-102(a) as means, not elements. In Hill v. State , the defendant was originally charged with kidnapping in violation of § 5-11-102(a)(4) ; an amended information was later filed, which included new allegations under subsections (a)(3) and (a)(6). 370 Ark. 102 , 257 S.W.3d 534 , 537 (2007). The Supreme Court of Arkansas explained that "the amendment did not change the nature of the kidnapping charge; rather, it amended the manner in which the alleged kidnapping took place." Id. at 538. Arkansas's appellate court conceives of § 5-11-102 similarly. See Singleton-Harris v. State , 2014 Ark. App. 436 , 439 S.W.3d 720 , 723 (2014) ("The State need only prove that the accused restrained the victim so as to interfere with the victim's liberty, without consent, for a specific purpose outlined in the statute.").

Arkansas's model jury instructions reinforce the treatment of the nefarious purposes as means, not elements. See United States v. McMillan , 863 F.3d 1053 , 1057 (8th Cir. 2017) ("We may use a state's model jury instructions to 'reinforce' our interpretation of the means or elements inquiry."). The model instructions list only two elements: first, restraining the victim without consent so as to interfere substantially with the victim's liberty; and second, doing so with a specific purpose. The nefarious purposes are then listed in the alternative, suggesting that they are alternative means to fulfill a single element. Ark. Model Jury Instr. Crim. 2d 1101. Arkansas trial courts have at times instructed the jury on multiple nefarious purposes in the disjunctive, see, e.g. , Sasser v. State , 338 Ark. 375 , 993 S.W.2d 901 , 908 (1999) (per curiam), further supporting the conclusion that the purposes are means. Cf. Mathis , 136 S.Ct. at 2257 (explaining that jury instructions "referencing one alternative term to the exclusion of all others" could indicate "that the statute contains a list of elements").

*595 Because § 5-11-102 lists alternative means, it is indivisible. The government concedes that without division, Arkansas's kidnapping statute does not qualify as a violent felony. Therefore, Coleman does not have three predicate offenses and the district court plainly erred in sentencing him under the ACCA. The error affects Coleman's substantial rights and the fairness and integrity of judicial proceedings, because without the ACCA enhancement, his statutory maximum sentence is five years shorter than the sentence he received, and his advisory Guidelines range is likely shorter, too. See Boman , 873 F.3d at 1043 . Thus, we reverse and remand for resentencing in accordance with this opinion.