AD caught on film

[DrHenley]

That was most likely "trigger bounce" caused by either too heavy a trigger (reason they make skeletonized triggers) or too light or short of a trigger pull, or a combination thereof.

The match director of an IDPA match I was in had that happen to him on one of the stages and he had to disqualify himself from the match. In his case it was because he had the trigger pull down to ounces.