Montana Title 45. Crimes § 45-5-623. Unlawful transactions with children

(a) sells or gives explosives to a child except as authorized under appropriate city ordinances;

(b) sells or gives intoxicating substances other than alcoholic beverages to a child;

(c) sells or gives an alcoholic beverage to a person under 21 years of age;

(d) sells or gives to a child a tobacco product, alternative nicotine product, or vapor product, as defined in 16-11-302;

(e) sells or gives to a child a synthetic marijuana product, as defined in 16-12-102;

(f) being a junk dealer, pawnbroker, or secondhand dealer, receives or purchases goods from a child without authorization of the parent or guardian; or

(g) tattoos or provides a body piercing on a child without the explicit in-person consent of the child's parent or guardian. For purposes of this subsection (1)(g), “tattoo” and “body piercing” have the meaning provided in 50-48-102. Failure to adequately verify the identity of a parent or guardian is not an excuse for violation of this subsection (1)(g).