Ammunition and magazine laws in Michigan

(1)   Except as provided in subsection (2), a person shall not manufacture, distribute, sell, or use armor piercing ammunition in this state. A person who willfully violates this section is guilty of a felony, punishable by imprisonment for not more than 4 years, or by a fine of not more than $2,000.00, or both.
(2)   This section does not apply to either of the following:
(a)   A person who manufactures, distributes, sells, or uses armor piercing ammunition in this state, if that manufacture, distribution, sale, or use is not in violation of chapter 44 of title 18 of the United States Code.
(b)   A licensed dealer who sells or distributes armor piercing ammunition in violation of this section if the licensed dealer is subject to license revocation under chapter 44 of title 18 of the United States Code for that sale or distribution.
(3)   As used in this section:
(a)   "Armor piercing ammunition" means a projectile or projectile core which may be used in a pistol and which is constructed entirely, excluding the presence of traces of other substances, of tungsten alloys, steel, iron, brass, bronze, beryllium copper, or a combination of tungsten alloys, steel, iron, brass, bronze, or beryllium copper. Armor piercing ammunition does not include any of the following:

(x)(1) It shall be unlawful for a person to sell, deliver, or otherwise transfer to a person who the transferor knows or has reasonable cause to believe is a juvenile—
(A) a handgun; or
(B) ammunition that is suitable for use only in a handgun.
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(5) For purposes of this subsection, the term "juvenile" means a person who is less than 18 years of age.

Small Arms Ammunition: Ammunition is classified as a Division 1.1, 1.2, 1.3, or 1.4 explosive, depending on the degree of hazard. Ammunition that is regulated as a Class 1 explosive and designed to be fired from a pistol, revolver, rifle, or shotgun, as well as associated primers and blank cartridges (including those designed for tools) and propellant powder for use in any firearm, is prohibited from mailing.
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Shotgun Hulls, Empty Casings, Nonmetallic Shotgun Hulls, or Casings Without Primers: These articles are not classified as explosives or hazardous materials under 49 CFR and, therefore, are mailable, subject to the applicable mailing rules (refer to 224).