New Hampshire - 

As of May 2010, New Hampshire has repealed all of its knife laws, by unanimous vote of both houses of the state legislature.  Only the following remain in force:


    159:16 Carrying or Selling Weapons. – Whoever, except as provided by the laws of this state, sells, has in his possession with intent to sell, or carries on his person any blackjack, slung shot, or metallic knuckles shall be guilty of a misdemeanor; and such weapon or articles so carried by him shall be confiscated to the use of the state.
Source. 1973, 370:16; 1992, 273:2, eff. July 17, 1992. 2010, 67:1, eff. May 18, 2010.


   159:15 Possession of Dangerous Weapon While Committing a Violent Crime. – 
    I. A person shall be guilty of a class A misdemeanor if that person uses or employs slung shot, metallic knuckles, billies, or other deadly weapon as defined in RSA 625:11, V during the commission or attempted commission of a violent crime. 
    II. "Violent crime,'' for purposes of this section, means "violent crime'' as defined in RSA 651:5, XIII.
Source. 1973, 370:15. 1998, 373:1. 2001, 214:2, eff. Jan. 1, 2002.


   159:24 Sale of Martial Arts Weapons. – 
    I. "Martial arts weapon'' means any kind of sword, knife, spear, throwing star, throwing dart, or nunchaku or any other object designed for use in the martial arts which is capable of being used as a lethal or dangerous weapon. 
    II. Any person who shall sell, deliver, or otherwise transfer any martial arts weapon to a person under the age of 18 without first obtaining the written consent of such person's parent or guardian shall be guilty of a misdemeanor. 
    III. Paragraph II shall not apply to fathers, mothers, guardians, administrators or executors who give a martial arts weapon to their children or wards or to heirs to an estate.
Source. 1986, 222:3, eff. Jan. 1, 1987.


    159:3 Convicted Felons. – 
    I. A person is guilty of a class B felony if he: 
       (a) Owns or has in his possession or under his control, a pistol, revolver, or other firearm, or slungshot, metallic knuckles, billies, stiletto, switchblade knife, sword cane, pistol cane, blackjack, dagger, dirk-knife, or other deadly weapon as defined in RSA 625:11, V; and 
       (b) Has been convicted in either a state or federal court in this or any other state, the District of Columbia, the Commonwealth of Puerto Rico, or any territory or possession of the United States of: 
          (1) A felony against the person or property of another; or 
          (2) A felony under RSA 318-B; or 
          (3) A felony violation of the laws of any other state, the District of Columbia, the United States, the Commonwealth of Puerto Rico or any territory or possession of the United States relating to controlled drugs as defined in RSA 318-B. 
    I-a. A person is guilty of a class B felony if such person completes and signs an application for purchase of a firearm and the person is a convicted felon under the provisions of paragraph I. 
    II. The state shall confiscate to the use of the state the weapon or weapons of persons convicted under this section. 
    III. It is an affirmative defense to a charge under this section that a felony of which a defendant has been convicted in another jurisdiction would not have constituted a felony in the state of New Hampshire at the time such felony was committed.
Source. 1923, 118:3. PL 149:3. RL 179:3. RSA 159:3. 1973, 405:1; 528:83. 1981, 553:4. 1993, 157:1. 2001, 189:1; 214:1, eff. Jan. 1, 2002.



   159:26 Firearms, Ammunition, and Knives; Authority of the State. – [preemption] 
    I. To the extent consistent with federal law, the state of New Hampshire shall have authority and jurisdiction over the sale, purchase, ownership, use, possession, transportation, licensing, permitting, taxation, or other matter pertaining to firearms, firearms components, ammunition, firearms supplies, or knives in the state. Except as otherwise specifically provided by statute, no ordinance or regulation of a political subdivision may regulate the sale, purchase, ownership, use, possession, transportation, licensing, permitting, taxation, or other matter pertaining to firearms, firearms components, ammunition, or firearms supplies in the state. Nothing in this section shall be construed as affecting a political subdivision's right to adopt zoning ordinances for the purpose of regulating firearms or knives businesses in the same manner as other businesses or to take any action allowed under RSA 207:59. 
    II. Upon the effective date of this section, all municipal ordinances and regulations not authorized under paragraph I relative to the sale, purchase, ownership, use, possession, transportation, licensing, permitting, taxation, or other matter pertaining to firearms, firearm components, ammunition, firearms supplies, or knives shall be null and void.
Source. 2003, 283:2, eff. July 18, 2003. 2011, 139:1, eff. Aug. 6, 2011.



- 625:11 General Definitions. [part]
    V. "Deadly weapon'' means any firearm, knife or other substance or thing which, in the manner it is used, intended to be used, or threatened to be used, is known to be capable of producing death or serious bodily injury. 
    VI. "Serious bodily injury'' means any harm to the body which causes severe, permanent or protracted loss of or impairment to the health or of the function of any part of the body.
Source. 1971, 518:1, eff. Nov. 1, 1973.



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