I don’t understand...were these illegal or unregistered weapons?
Article XVII. The people have a right to keep and to bear arms for the common defence CONSTITUTION OF THE COMMONWEALTH OF MASSACHUSETTS.
How can their *be* illegal weapons or a requirement to register them in the commonwealth? Oh, I forgot progressives only apply Constitutions when it suits them.
An "infernal device" is likely an explosive device of some sort (maybe a grenade? or homemade claymore?)
No, but having too many legal things just ain't right. People who have too many legal things must be arrested!