Maryland Code, Natural Resources § 10-408

(i) Prescribe by regulation the means or weapons for hunting designated wildlife; and

(ii) Set forth any restrictions relating to weapons used to hunt designated wildlife, including the amount and size of ammunition for designated game birds or mammals.

(i) Is at least 21 years old;

(ii) Is hunting in deer management Region A as defined by the Department's Guide to Hunting and Trapping;

(iii) Is carrying the handgun for personal protection; and

(iv) Does not use the handgun to kill wildlife wounded by a vertical bow or crossbow.