Sen. Joe Manchin (D-W.Va.) was among the negotiators. Sen. Joe Manchin (D-W.Va.). (Reuters)

Sen. Joe Manchin (D-W.Va.), one of the lead sponsors of a gun control compromise bill earlier this year, said Sunday that he's not going to push for a new gun debate unless he sees an increase in support for the effort.

"Not unless there's a movement," Manchin said on CBS's "Face the Nation." "You know, I'm not going to go out there and just beat the drum for the sake of beating the drum."

Guns are again in the news after the shooting deaths of a dozen people last week at the Washington Navy Yard. Top Senate Democrats have pushed for another look at the issue, after a background checks bill spearheaded by Manchin and Sen. Pat Toomey (R-Pa.) failed by five votes earlier this year.

Manchin suggested that he would have to see some movement in which previous opponents of new gun laws and background checks re-think things.

"There has to be people willing to move off the position they've taken," Manchin said. "They've got to come to that conclusion themselves. I'm still talking to everybody. And I welcome everyone's input if they think that we can make some adjustments and make them comfortable."