My cousin went in today to purchase a firearm, and was delayed, and we started talking about his past. He currently is 23, and has had a deferred drug paraphernalia ticket when he was 18, and recently an open case dwi, which he states is a misdemeanor A. My question is, is it legal for him to have in possession, in his home or place of stay, knives, nun chucks, etc, if he CANT legally own a firearm. What are laws pertaining to owning knives, not carrying, in texas.