Momentum grew for Senate passage of gun legislation when a bipartisan group of senators on Wednesday announced agreement on deals to expand background checks and tighten laws against gun trafficking.

The first breakthrough came in a deal on background checks announced by Sens. Pat Toomey (R-Pa.) and Joe Manchin (D-W.Va.), who agreed on an amendment that would exempt all “personal” transfers of weapons between individuals, but would close the infamous gun show loophole and also require background checks on Internet sales.

“All personal transfers are not touched whatsoever,” said Manchin. “We’ve done these two [gun shows and Internet sales], and we’ve done them and done them right.”

While the bill is likely to be passed by the Senate, it’s unclear if it has any chance of passage in the Republican-dominated House of Representatives, with many GOP lawmakers remaining openly opposed to new gun control legislation. Still, the development is likely to be welcomed by many proponents of the bill, some of whom didn’t expect the agreement to survive a filibuster.