may not be legally possessed (except by law enforcement) in Massachusetts, reports Eric Muller (Is That Legal?). Here’s the statute (paragraph break added):
Whoever, other than a police or other law enforcement officer acting in the discharge of his official duties, has in his possession or under his control an infernal machine or a similar instrument, contrivance or device shall be punished by imprisonment in the state prison for not more than ten years or in jail for not more than two and one half years, or by a fine of not more than one thousand dollars, or by both such fine and imprisonment, and the said machine, instrument, contrivance or device shall be forfeited to the commonwealth.
The term