They still have cap pistols but as far as I can tell they barely work because:
1. The gun mechanisms are so cheaply made that they won't feed the caps properly.
2. They have greatly reduced the amount of powder in the caps.
Caps used to give a much more satisfying bang. When I was five years old I decided to see what would happen if I dropped a brick on a whole roll of caps. The bang was so loud that my ears were ringing for a long time.