Chapter 269: Section 10. Carrying dangerous weapons...
(b) Whoever, except as provided by law, carries on his
person, or carries on his person or under his control
in a vehicle, any stiletto, dagger or a device or case
which enables a knife with a locking blade to be drawn
at a locked position, any ballistic knife, or any knife
with a detachable blade capable of being propelled by any
mechanism, dirk knife, any knife having a double-edged blade,
or a switch knife, or any knife having an automatic spring
release device by which the blade is released from the
handle, having a blade of over one and one-half inches,
or a slung shot, blowgun, blackjack, metallic knuckles
or knuckles of any substance which could be put to the
same use with the same or similar effect as metallic
knuckles, nunchaku, zoobow, also known as klackers or
kung fu sticks, or any similar weapon consisting of two
sticks of wood, plastic or metal connected at one end by a
length of rope, chain, wire or leather, a shuriken or any
similar pointed starlike object intended to injure a person
when thrown, or any armband, made with leather which has
metallic spikes, points or studs or any similar device made
from any other substance or a cestus or similar material
weighted with metal or other substance and worn on the hand,
or a manrikigusari or similar length of chain having weighted
ends; or whoever, when arrested upon a warrant for an alleged
crime, or when arrested while committing a breach or disturbance
of the public peace, is armed with or has on his person, or has
on his person or under his control in a vehicle, a billy or
other dangerous weapon other than those herein mentioned and
those mentioned in paragraph (a), shall be punished by
imprisonment for not less than two and one-half years nor more
than five years in the state prison, or for not less than six
months nor more than two and one-half years in a jail or house
of correction, except that, if the court finds that the defendant
has not been previously convicted of a felony, he may be punished
by a fine of not more than fifty dollars or by imprisonment for
not more than two and one-half years in a jail or house of correction.