To those that've been asking @ DEA, I've been giving out the wrong name to look for on e-bay.
The company that makes them *IS* Global Dynamics, but the e-bay store is DynamicDesigns
http://stores.ebay.com/Dynamic-Designs/ ... b=10090828
The heavy-duty tactical one adjusts to fit big necks (I'm a hair over 19" and it's fine)
If they don't have the plugs you need email them.
Remember, if you don't sweat-proof them they will not work for long.