In America, speed is most often thought of in terms of miles per hour (mph). But when answering the question of how fast does a bullet travel, it’s best to think of speed in feet per second (fps).

According to "assault weapon" ban proponents, the AR rifle's lethality is all about how fast its bullets travel. The Washington Post recently claimed that "what makes [the AR] so deadly is the speed ...

The president's claim is incorrect, and generalizes the varying speeds of bullets fired from different kinds of guns. However, the AR-15 is still an especially lethal weapon and has been used to ...