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Thread: A quick OC question

  1. #1
    Regular Member
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    May 2007
    , ,

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    What are CO's laws on OC Knives? I've looked around but haven't be able to find it. A buddy told me that it's legal as long as you don't enter federal property, school property and if asked you exit private property on the double time.

    can any one help me out?

  2. #2
    Regular Member
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    May 2007
    Castle Rock, ,

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    You can go to and they have the knife carry rules listed. Basically anywhere except Denver City you can conceal carry up to 3.5" and in Denver I believe it is 3.0". Open carry I believe is okay if it is a hunting/fishing knife is used in hunting event. I ask a Lt in the Northglenn PD and he kinda laughed and said he could care less is I had a sword in my truck. What ya going to do? Try to weild it from a truck? I had a boynet that I kept next to my seat in my truck so I could cut my seat belt if I needed to in an emergency. But now I just carry a kershaw knife which is for sure legal in Colorado. Kershaws are great, faster than a switchblade and cheaper!!

    Reads like:

    Colorado - Criminal Code Section 18-12-101. Definitions...
    (e) "Gravity knife" means any knife that has a blade
    released from the handle or sheath thereof by the force of
    gravity or the application of centrifugal force, that when
    released is locked into place by means of a button,
    spring, lever, or other device... (f) "Knife" means any
    dagger, dirk, knife, or stiletto with a blade over 3-1/2
    inches in length, or any other dangerous instrument
    capable of inflicting cutting, stabbing, or tearing
    wounds, but does not include a hunting or fishing knife
    carried for sports use. The issue that a knife is a
    hunting or fishing knife must be raised as an affirmative
    defense. (j) "Switchblade knife" means any knife, the
    blade of which opens automatically by hand pressure
    applied to a button, spring, or other device in its
    handle... (a.3) "Ballistic knife" means any knife that has
    a blade which is forcefully projected from the handle by
    means of a spring-loaded device or explosive charge.

  3. #3
    Regular Member Anubis's Avatar
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    Sep 2006
    Arapahoe County CO, ,

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    The state laws relate to what knife can be legally concealed. The blade length limit of 3.5 inches is the principal detail. Fixed blades under 3.5 inches are OK, unlike a lot of other states' laws.

    But the original question in the thread concerned open carry of knives. There are no state laws specifying a maximum blade length for open carry.

    Autos, "gravity" knives,or balisongs are not permitted either concealed or openly carried.

    For a summary of all state knife laws,

    Local ordinances are online for severalColorado cities and counties at

    Denver is included, so you could do a keyword search for "knife" or "blade".

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