Michigan -750.226... Carrying with unlawful intent Any person who, with intent to use the same unlawfully against the person of another, goes armed with a pistol or other firearm or dagger, dirk, razor, stiletto, or knife having a blade over 3 inches in length, or any other dangerous or deadly weapon or instrument, shall be guilty of a felony, punishable by imprisonment in the state prison for not more than 5 years or by a fine of not more than 2,500 dollars. - 750.226a. Pocket knife opened by mechanical device... Any person who shall sell or offer to sell, or any person who shall have in his possession any knife having the appearance of a pocket knife, the blade or blades of which can be opened by a flick of a button, pressure on a handle or other mechanical contrivance shall be guilty of a misdemeanor... [Also, concealed carry may be charged as a felony under 750.227.] The provisions of this section [750.226a] shall not apply to any one-armed person carrying a knife on his person in connection with his living requirements. - 750.227. (1) A person shall not carry a dagger, dirk, stiletto, a double-edged nonfolding stabbing instrument of any length, or any dangerous weapon, except a hunting knife adapted and carried as such, concealed on or about his or her person, or whether concealed or otherwise in any vehicle... except in his or her dwelling house [or] place of business... (3) A person who violates this section is guilty of a felony... - 750.222a Double-edged, nonfolding stabbing instrument defined. (1) As used in this chapter, 'doubled-edged, nonfolding stabbing instrument' does not include a knife, tool, implement, arrowhead, or artifact manufactured from stone by means of conchoidal fracturing. (2) Subsection (1) does not apply to an item being transported in a vehicle, unless the item is in a container and inaccessible to the driver. History: Add. 2000, Act 343, Imd. Eff. Dec. 27, 2000 . - 259.80f Possessing... certain items in sterile area of airport; (1) An individual shall not possess, carry, or attempt to possess or carry any of the following in a sterile area of a commercial airport: (a) Firearm. (b) Explosive. (c) Knife with a blade of any length. (d) Razor, box cutter, or item with a similar blade. (e) Dangerous weapon. (2) Except as provided in subsection (3), an individual who violates subsection (1) is guilty of a misdemeanor punishable by imprisonment for not more than 1 year or a fine of not more than $1,000.00, or both. (3) An individual who violates subsection (1) while doing any of the following is guilty of a felony punishable by imprisonment for not more than 10 years or a fine of not more than $10,000.00, or both: (a) Getting on or attempting to get on an aircraft. (b) Placing, attempting to place, or attempting to have placed on an aircraft an item listed in subsection (1). (c) Committing or attempting to commit a felony. (4) [Exempts most officials]... (7) As used in this section: (a) 'Commercial airport' means an airport that has regularly scheduled commercial flights to and from other destinations. (c) 'Sterile area' means that term as defined in 14 C.F.R. 107.1. History: Add. 2001, Act 225, Eff. Apr. 1, 2002 . - 380.1313 Dangerous weapon found in possession of pupil... (1) If a dangerous weapon is found in the possession of a pupil while the pupil is in attendance at school or a school activity or while the pupil is enroute to or from school on a school bus, the superintendent of the school district or intermediate school district, or his or her designee, immediately shall report that finding to the pupil's parent or legal guardian and the local law enforcement agency. (2) If a school official finds that a dangerous weapon is in the possession of a pupil as described in subsection (1), the school official may confiscate the dangerous weapon or shall request a law enforcement agency to respond as soon as possible and to confiscate the dangerous weapon. If a school official confiscates a dangerous weapon under this subsection, the school official shall give the dangerous weapon to a law enforcement agency and shall not release the dangerous weapon to any other person, including the legal owner of the dangerous weapon. A school official who complies in good faith with this section is not civilly or criminally liable for that compliance... (4) As used in this section, 'dangerous weapon' means a firearm, dagger, dirk, stiletto, knife with a blade over 3 inches in length, pocket knife opened by a mechanical device, iron bar, or brass knuckles. History: Add. 1987, Act 211, Imd. Eff. Dec. 22, 1987 ;--Am. 1995, Act 76, Eff. Aug. 1, 1995 . Popular Name: Act 451 * Michigan Case Law: - "Constitutionality: The double jeopardy protection against multiple punishment for the same offense is a restriction on a court's ability to impose punishment in excess of that intended by the Legislature, not a limit on the Legislature's power to define crime and fix punishment. People v. Sturgis, 427 Mich. 392, 397 N.W.2d 783 (1986). - "Purpose of this section is to prevent quarreling or criminal persons from suddenly drawing weapons without notice to other persons." (1980) - "Purpose of concealed weapons statutes, such as this section, is to prevent men in sudden quarrel or in commission of crime from drawing concealed weapons and using them without prior notice to their victims that they were armed, inasmuch as person attacked would behave one way if he knew his assailant was armed and perhaps another way if he could safely presume that assailant was unarmed." (1969) - "The basic intent of the legislature as indicated in concealed weapon statute was that weapons should not be carried when they might be used to take lives." (1968) _ "...the 'dwelling house' exception to the concealed weapons statute did not apply to defendant who was incarcerated in state prison at time of alleged commission of such offense." (1978) - "Purpose or intent with which a weapon is carried is not an element of offense of carrying a concealed weapon." (1973) - "Jury's determination that knife sharpening steel, which defendant... contended he carried only for protection... was a concealed weapon, was justified." (1971) - "Straight razor in pocket of defendant was 'concealed'..." (1967) - "Daggers, dirks, stilettos... and similar articles, designed for the purpose of bodily assault or defense, are generally recognized as 'dangerous weapons per se'..." (1945) - "Pocket knives, razors, hammers, hatchets, wrenches, cutting tools, and other articles would constitute 'dangerous weapons'... if used or carried for use as weapons." (1945) - "An ordinary jackknife with a pointed blade 3-5/16 inches long was not a 'dangerous weapon...' in the absence of evidence that it was used or carried for use as a weapon." (1945) - "Five-inch, double-edged, nonfolding knife was not a 'hunting knife' within hunting knife exception..." (1989) - "Defendant charged with carrying concealed weapon had burden of proving that hunting knife was 'adapted and carried as such'..." (1980) http://www.knife-expert.com