No person shall discharge any firearm, air gun, beebee gun, bow, or any toy gun projecting lead, missile or arrow; provided that 946 CMR 4.10 shall not be construed to prohibit any officer of the law from discharging a Firearm in the performance of his duty; nor to any person authorized by the Executive Director to maintain or reduce the size of bird flocks or the number of wild animals within Devens; nor to any citizen from discharging a firearm when lawfully defending person or property.
946 CMR, § 4.10