I am a little cofused but this is what I can tell you about hanger bars. First they are an "add on" not a replacement for standard dovetail mounting. The typical and standard TC mounting for a foreend on a Contender is either one or two dovetail mounted nuts in the underside of the barrel. There are two basic configurations of the 'two screw' type ....one is that the nuts are about 3 1/8" center to center (called 14" spacing) ...the other is about 3 7/16" (called Super 16 spacing). You can take a TC factory barrel 'add on' a hanger bar and mount a Bullberry, VVCG, Georgia Jim, Pachmyer foreend on it as long as the foreend is properly cut out for it. Most aftermarket 'hanger bar foreends' are cutout to allow for both lengths...they just extend the slot for the bar out to accomodate both 14" and 16" spacing.
You can buy a Bullberry, VVCG barrel that has a hanger bar....take the hanger bar off and use the dovetail nuts to mount a factory style foreend on it .....
All factory Contender barrels that I have ever seen come with dovetail nuts mounted underside of the barrel !
Clear as mud ??