Maryland Criminal Law Section 3-403

      (a)      A person may not commit or attempt to commit robbery under § 3-402 of this subtitle:

            (1)      with a dangerous weapon; or

            (2)      by displaying a written instrument claiming that the person has possession of a dangerous weapon.

      (b)      A person who violates this section is guilty of a felony and on conviction is subject to imprisonment not exceeding 20 years.