no you would be fine. parking lots are exempted. i have had to go to the ATF office in downtown detroit to turn in a suppressor bought in another state, and then again recently to finish some paperwork on the same issue. per the ATF agent all federal property parking lots at least in MI are fine so long as you do not try to go past a check point into a building. post offices are fine, and apparently so is the ATF office downtown. its also exempted in mi law, post offices at least. and my gun board has said that leaving your gun in your vehicle is fine at any post office in MI.
The only parking lots exempted are the ones in the statute. Many parking lots are not exempted. Be careful a little knowledge is a dangerous thing.
Sec. 5o. (1) Subject to subsection (4), an individual licensed under this act to carry a concealed pistol, or who is exempt from licensure under section 12a(f), shall not carry a concealed pistol on the premises of any of the following:
(a) A school or school property except that a parent or legal guardian of a student of the school is not precluded from carrying a concealed pistol while in a vehicle on school property, if he or she is dropping the student off at the school or picking up the child from the school. As used in this section, “school” and “school property” mean those terms as defined in section 237a of the Michigan penal code, 1931 PA 328, MCL 750.237a.
(b) A public or private child care center or day care center, public or private child caring institution, or public or private child placing agency.
(c) A sports arena or stadium.
(d) A bar or tavern licensed under the Michigan liquor control code of 1998, 1998 PA 58, MCL 436.1101 to 436.2303, where the primary source of income of the business is the sale of alcoholic liquor by the glass and consumed on the premises. This subdivision shall not apply to an owner or employee of the business. The Michigan liquor control commission shall develop and make available to holders of licenses under the Michigan liquor control code of 1998, 1998 PA 58, MCL 436.1101 to 436.2303, an appropriate sign stating that “This establishment prohibits patrons from carrying concealed weapons”. The owner or operator of an establishment licensed under the Michigan liquor control code of 1998, 1998 PA 58, MCL 436.1101 to 436.2303, may, but shall not be required to, post the sign developed under this subdivision. A record made available by an establishment licensed under the Michigan liquor control code of 1998, 1998 PA 58,
MCL 436.1101 to 436.2303, necessary to enforce this subdivision is exempt from disclosure under the freedom of information act, 1976 PA 442, MCL 15.231 to 15.246.
(e) Any property or facility owned or operated by a church, synagogue, mosque, temple, or other place of worship, unless the presiding official or officials of the church, synagogue, mosque, temple, or other place of worship permit the carrying of concealed pistol on that property or facility.
(f) An entertainment facility with a seating capacity of 2,500 or more individuals that the individual knows or should know has a seating capacity of 2,500 or more individuals or that has a sign above each public entrance stating in letters not less than 1-inch high a seating capacity of 2,500 or more individuals.
(g) A hospital.
(h) A dormitory or classroom of a community college, college, or university.
(2) An individual licensed under this act to carry a concealed pistol, or who is exempt from licensure under
section 12a(f), shall not carry a concealed pistol in violation of R 432.1212 or a successor rule of the Michigan administrative code promulgated pursuant to the Michigan gaming control and revenue act, the Initiated Law of 1996, MCL 432.201 to 432.226.
(3) As used in subsection (1), “premises” does not include parking areas of the places identified under subsection (1).