One other point: when deciding if a push dagger is legal in your state, you not only need to consider the specific banned knife characteristics, but also the impact of any “catch-all” clause in the statute. This might read something like any implement designed to cause serious injury or death and serves no common lawful purpose.
There has been at least 1 conviction in Pennsylvania for carrying a folding knife with a blade that could lock parallel or perpendicular to the handle, so fixed v. folding may not be a strong legal position.
Southnarc made a good decision in making these single edged, but in many states that might not get us much.
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