Md. Code, Public Safety § 5–144

(a) Except as otherwise provided in this subtitle, a dealer or other person may not:

(1) knowingly participate in the illegal sale, rental, transfer, purchase, possession, or receipt of a regulated firearm in violation of this subtitle; or

(2) knowingly violate § 5–142 of this subtitle.

(b) A person who violates this section is guilty of a misdemeanor and on conviction is subject to imprisonment not exceeding 5 years or a fine not exceeding $10,000 or both.

(c) Each violation of this section is a separate crime.