Automatic Knife Laws In USA
The following states do NOT prohibit auto-open (also referred to as automatic, switchblade or switch knife) for non-law enforcement citizens. Check State Knife Laws for specific details on possession, carry, manufacturer or sale as some restrictions may apply in a specific state. See the list below for blade length restrictions. Data is compiled by the nonprofit association, American Knife and Tool Institute, and can be found here.
Alabama
Alaska
Arizona
Arkansas
California (less than 2″ blade length limitation)
Colorado (effective approximately Aug. 9, 2017; concealed carry maximum length 3-1/2″)
Connecticut (maximum 1-1/2″ blade length limitation)
Florida
Georgia
Idaho
Illinois (effective Aug. 11, 2017 with valid Firearms Owner’s Identification Card FOID)
Indiana
Iowa
Kansas (since 2013)
Kentucky (only with weapons license)
Louisiana (effective August 1, 2018)
Maine (effective October 15, 2015)
Massachusetts (maximum 1-1/2″ blade length limitation)
Michigan (effective October 10, 2017 – out-the-front, double edged automatics still prohibited)
Mississippi
Missouri (since 2012)
Montana (maximum 1-1/2″ blade length limitation – removed 2019)
Nebraska
Nevada (effective July 1, 2015 – 2″ blade length limitation removed)
New Hampshire (since 2010)
North Carolina (concealed carry not recommended – see North Carolina Knife Laws)
North Dakota (maximum 5″ blade length limitation)
Oklahoma (effective November 1, 2015)
Oregon
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Vermont (less than 3″ blade length limitation)
Washington (manufacture allowed, limited possession to law enforcement and emergency personnel)
West Virginia (must be 21 years of age)
Wisconsin (effective February, 2016)
Wyoming
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