The Glock 18 is dimensionally very similar to the Glock 17, with only a handful of differences. One difference is the presence of a turret-shaped selector switch on the right rear side of the slide.
We’re at Desert Hills Shooting Club near Boulder City, and Paul Barrett steps up with a Glock 17. He fires the 9 mm semi-automatic pistol 18 times in about five seconds and hits the target every time.