Any 5th wheel hitch operate exactly like a semi 5th wheel?

KMLsquared wrote:
My rbw lil rocker does that but it doesn't push jaws open. It has a slide bar that is held open with a dawg. When the pin moves the dawg out of the way the slide bar closes. There is no other pining required.

My HiJacker has a slide bar too. But I pull the handle and twist it up to engage the dawg. When the trailers' pin hits home the bar slides shut. Not like it used too though. It's 10 years od. I need to pressure wash the old grease out of it and use some slip plate on it.