New Mexico - Criminal Offenses - 30-1-12. Definitions... B. "deadly weapon" means any... weapon which is capable of producing death or great bodily harm, including but not restricted to any types of daggers, brass knuckles, switchblade knives, bowie knives, poniards, butcher knives, dirk knives and all such weapons with which dangerous cuts can be given, or with which dangerous thrusts can be inflicted, including swordcanes, and any kind of sharp pointed canes... - 30-7-2. Unlawful carrying of a deadly weapon... consists of carrying a concealed... deadly weapon anywhere, except in the following cases [own residence or property; private automobile or other means of conveyance; official]... a petty misdemeanor. - 30-7-8. Unlawful possession of switchblades. Unlawful possession of switchblades consists of any person, either manufacturing, causing to be manufactured, possessing, displaying, offering, selling, lending, giving away or purchasing any knife which has a blade which opens automatically by hand pressure applied to a button, spring or other device in the handle of the knife, or any knife having a blade which opens or falls or is ejected into position by the force of gravity or by any outward or centrifugal thrust or movement. Whoever commits unlawful possession of switchblades is guilty of a petty misdemeanor.
New Mexico Case Law: - "Jury to determine character of weapon..." (1973) - "...a butterfly knife was a switchblade..." (1991)