Md. Code, Criminal Law § 4–204

(a) (1) In this section, “firearm” means:

(i) a weapon that expels, is designed to expel, or may readily be converted to expel a projectile by the action of an explosive; or

(ii) the frame or receiver of such a weapon.

(2) “Firearm” includes an antique firearm, handgun, rifle, shotgun, short–barreled rifle, short–barreled shotgun, starter gun, or any other firearm, whether loaded or unloaded.

(b) A person may not use a firearm in the commission of a crime of violence, as defined in § 5–101 of the Public Safety Article, or any felony, whether the firearm is operable or inoperable at the time of the crime.

(c) (1) (i) A person who violates this section is guilty of a misdemeanor and, in addition to any other penalty imposed for the crime of violence or felony, shall be sentenced to imprisonment for not less than 5 years and not exceeding 20 years.

(ii) The court may not impose less than the minimum sentence of 5 years and, except as otherwise provided in § 4–305 of the Correctional Services Article, the person is not eligible for parole in less than 5 years.

(2) For each subsequent violation, the sentence shall be consecutive to and not concurrent with any other sentence imposed for the crime of violence or felony.