Md. Code, Criminal Law § 4–110

(a) In this section, “restricted firearm ammunition” means a cartridge, a shell, or any other device that:

(1) contains explosive or incendiary material designed and intended for use in a firearm; and

(2) has a core constructed, excluding traces of other substances, entirely from one or a combination of:

(i) tungsten alloys;

(ii) steel;

(iii) iron;

(iv) brass;

(v) beryllium copper;

(vi) depleted uranium; or

(vii) an equivalent material of similar density or hardness.

(b) A person may not, during and in relation to the commission of a crime of violence as defined in § 14–101 of this article, possess or use restricted firearm ammunition.

(c) 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 $5,000 or both.