If you're going to wear a rigger's belt, you are going to need a rated climbing caribiner to go with it. In fact, modern soldiers need one anyway. From hanging your pack outside a PMV, to connecting toggle ropes to doing a pull on a suspected IED, a rated caribiner is a must have. The Austri-Alpin Ovalo is the best general usage caribiner going. It's oval shape finds the optimal position every time and makes it almost impossible to get cross-weighted. The 3-Way-Autolock ensures that you won't find the gate open at a critical time and the rounded profile ensures a fluid rope management.
IMPORTANT: READ INCLUDED INSTRUCTIONS BEFORE USE.