Was on my phone when I posted my response yesterday. Here are the links... Gun Belts by The Belt Man
Easy-Fit Original Instructor Belt
Instructor Belt is not rigid enough unless you get the insert in it. Held one in my hand today.A small light pistol my do fine but I like big guns. Glock 23 +.
Go to a police/army/navy store and get a good sturdy leather duty belt. I have two that close with velcro so they're infinitely adjustable.