For once, the National Rifle Association is not opposing a gun control measure. It has announced it won't fight a law banning bump stocks. The devices are not weapons in themselves but they turn semi-automatic rifles requiring a finger pull on the trigger each time to an automatic where with one pull of a trigger, the gun fires all the rounds in its magazine. The Las Vegas shooter was using a bump stock when he killed 58 people and wounded scores of others. While the NRA did not give a reason for supporting a ban, it has barred use of bump stocks on its firing ranges because they are hard to control and reduce marksmanship. Predictably, gun owners flooded shops selling bump stocks and bought them out. Congress needs to act quickly to prevent manufacturers from overloading the market place with the devices. is no good reason for the existence of a bump stock. They are not useful in hunting or in target practice. Their only practicality is to spray bullets in a general direction.