Michigan Law requires that residents of the State register their pistols (handguns).
MCL 28.422 (also known as "Section 2" of the Firearms Act 372 of 1927) outlines the requirements for registering.
MCL 28.432 makes SPECIFIC exception to "Section 2" (MCL 28.422) with the following reasons:
Note, (f) (above) does NOT state a RESIDENT of another state.28.432 Inapplicability of MCL 28.422; amendatory act as “Janet Kukuk act”.
Sec. 12.
(1) Section 2 does not apply to any of the following:
(a) A police or correctional agency of the United States or of this state or any subdivision of this state.
(b) The United States army, air force, navy, or marine corps.
(c) An organization authorized by law to purchase or receive weapons from the United States or from this state.
(d) The national guard, armed forces reserves, or other duly authorized military organization.
(e) A member of an entity or organization described in subdivisions (a) through (d) for a pistol while engaged in the course of his or her duties with that entity or while going to or returning from those duties.
(f) A United States citizen holding a license to carry a pistol concealed upon his or her person issued by another state.
(g) The regular and ordinary possession and transportation of a pistol as merchandise by an authorized agent of a person licensed to manufacture firearms or a licensed dealer.
(h) Purchasing, owning, carrying, possessing, using, or transporting an antique firearm. As used in this subdivision, "antique firearm" means that term as defined in section 231a of the Michigan penal code, 1931 PA 328, MCL 750.231a.
(i) An individual carrying, possessing, using, or transporting a pistol belonging to another individual, if the other individual's possession of the pistol is authorized by law and the individual carrying, possessing, using, or transporting the pistol has obtained a license under section 5b to carry a concealed pistol or is exempt from licensure as provided in section 12a.
(2) The amendatory act that added subsection (1)(h) shall be known and may be cited as the "Janet Kukuk act".
Therefore, a MICHIGAN resident can obtain a concealed pistol license from another State and have NO OBLIGATION (legally) to register their firearms.
Discussion on this can be found here and here.
The following post summarizes which States offer non-resident concealed carry permits along with other details.