Wyoming Statutes

Wyo. Stat. § 6-8-403 (2026)

Definitions.

✓ current as of May 2026

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(a)   As used in this act:

          (i) "Ammunition" means any projectile expelled by
action of an explosive from a firearm but shall not include any
projectile designed to pierce armor;
          (ii) "Borders of Wyoming" means the boundaries of
Wyoming as described in Section 2 of the Act of Admission of the
state of Wyoming, 26 United States Statutes at Large, 222,
chapter 664;

          (iii) "Firearm" means any weapon which will or is
designed to expel a projectile by the action of an explosive.
"Firearm" shall not include any fully automatic weapon or any
weapon designed to fire a rocket propelled grenade or any
explosive projectile;

          (iv) "Firearms accessories" means items that are used
in conjunction with or mounted upon a firearm but are not
essential to the basic function of a firearm, including, but not
limited to, telescopic or laser sights, magazines, folding or
aftermarket stocks and grips, speedloaders, ammunition carriers,
optics for target identification and lights for target
illumination;

          (v) "Generic and insignificant parts" includes, but
is not limited to, springs, screws, nuts and pins;

          (vi) "Manufactured" means that a firearm, a firearm
accessory or ammunition has been created from basic materials
for functional usefulness, including, but not limited to
forging, casting, machining, molding or other processes for
working materials;

          (vii)    "This act" means W.S. 6-8-402 through 6-8-406;

          (viii)   "Antique firearm" means:

               (A) Any muzzleloading firearm with a matchlock,
flintlock, percussion cap, or similar type of ignition system
manufactured in or before 1898;

               (B) Any replica of any firearm described in
subparagraph (A) if such replica is not designed or redesigned
for using rimfire or conventional centerfire fixed ammunition;
or

               (C) Any muzzleloading rifle, muzzleloading
shotgun or muzzleloading pistol, which is designed to use black
powder, or a black powder substitute, and which cannot use fixed
ammunition. For purposes of this paragraph, the term "antique
firearm" shall not include any weapon that incorporates a
firearm frame or receiver, any firearm that is converted into a
muzzleloading weapon or any muzzleloading weapon that can be
readily converted to fire fixed ammunition by replacing the
barrel, bolt, breechblock, or any combination thereof.

Notes of Decisions

Cited in 3 cases, 2000–2019 · leading case: Lyle L. Williams v. State of Wyoming ex rel., Univ. of Wyoming Bd. of Trs., 2019 WY 90 (Wyo. 2019).

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Lyle L. Williams v. State of Wyoming ex rel., Univ. of Wyoming Bd. of Trs., 2019 WY 90 (Wyo. 2019). · cites it 2× “Williams filed a complaint for declaratory judgment against UW in district court, seeking a declaration that: 1) “Wyoming Statute § 6-8-401 preempts UW Regulation 2-178 [] in so far as it relates to ‘firearms’ and ‘ammunition’”; 2) “UW Regulation 2-178 [] is not lawful or…”

Vanvorst v. State, 1 P.3d 1223 (Wyo. 2000). · cites it 2× “A jury convicted Lumbra for violating Wyo. Stat. Ann. § 6-8-403 (a)(@), and he was sentenced to four to six years in the Wyoming State Penitentiary.”

Ryan Russell Webster v. State, 2016 WY 76 (Wyo. 2016). “Webster "Ibought], - receive[d], concealled], or dispose[d] of property which he kn[elw, believe[d] or hald] reasonable cause to believe was obtained in violation of law," and that the value of the property in question was $1,000 or more, Wyo, Stat.”

— Wyo. Stat. § 6-8-403(a)(i) — 1 case

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