RE: at work today in walmart i saw a fella with a glock on his hip
From opencarry.org
Mississippi
Summary
Mississippi is an open carry state and the state constitution appears to guarantee this right. However, the legislature has confused the issue by the wording of their concealed carry law. OpenCarry.Org is working with Mississippi officials in an effort to clarify this. In addition to this issue, under their weak preemption, localities may regulate the carrying of firearms. For this reason, we have labeled Mississippi as 'indeterminate' for the time being. The good news is that open or concealed carry in any motor vehicle is perfectly legal.