Slight detour, but the max length of knife allowed for carry in Texas is 5 (or 5 1/2) inches. San Antonio city Council passed an ordinance that banned knives from 2 1/2 inches to 5 inches, specifically so they would have something to roust out gangbangers on. I told an SA cop that I carry a 4 inch blade and he said, “oh, we wouldn’t hassle YOU about that…”
Disturbing.
The local knife laws in Texas were eliminated two years ago when the legislature passed knife law preemption for the state:
http://gunwatch.blogspot.com/2015/05/tx-knife-preemption-to-governor-abbott.html
It was signed by Governor Abbott on June 17, 2015.
https://legiscan.com/TX/bill/HB905/2015