One of the largest manufacturers of bump stocks has stopped taking new orders—not out of any moral, legal, or principled consideration though. The decision was made, the Slide Fire company explains on their website, "in order to provide the best service with those already placed."

Put another way, they just can't fill the orders fast enough. And that decision to prioritize older orders is probably smart business after the Las Vegas attack. The writing might be on the wall for the bump stock, that accessory which hacks a semi-automatic rifle into a fully-automatic machine gun.

Along with 20 Senate Democrats, Sen. Dianne Feinstein, D-Calif., has introduced a bill banning the device and gun-control-shy Republicans have promised to take a look. Trump administration even seems open to the idea. White House counselor Kellyanne Conway said as much Thursday first on CNN and then on FOX.

So while business is good for the bump stock merchant, it might soon go bust.

Philip Wegmann is a commentary writer for the Washington Examiner.