Maybe it’s just me but I rather doubt many Americans had ever heard of “bump stock” before this past weekend when a madman opened fire on a crowd of 22,000 spectators attending a country music festival in Las Vegas, Nev.

A bump stock, we have learned, is a device that turns a semi-automatic weapon into a machine gun.

The shooter in Las Vegas had attached a bump stock to a semi-auto rifle and created an automatic weapon, a killing machine that took the lives of 58 people and injured more than 500 others.

Now the debate has been joined. And guess what: There seems to be some actual momentum building that could make bump stocks illegal. Congressional Republicans, who usually are allied with the National Rifle Association in opposing any effort to regulate guns in any fashion, now are calling for an examination of this device.

More good news? Sure. The NRA is softening its opposition, agreeing that Congress should debate the legality of bump stocks.

Hell has frozen over!

As The Hill reports: “The NRA believes that devices designed to allow semi-automatic rifles to function like fully-automatic rifles should be subject to additional regulations,” NRA CEO Wayne LaPierre and executive director of the NRA Institute for Legislative Action Chris Cox said in a joint statement.

Who would have thought such a thing could come from the NRA?

Might there be a gun law breakthrough?

I believe it’s a baby step toward taking some needed legislative steps regarding gun violence. I hope eventually that Congress will be able to be more comprehensive in its approach to curbing this kind of massacre. It likely will need some push from powerful public interests — such as the NRA.

If it’s against the law to own a machine gun, then how is it that bump stocks remain legal?