LOL, Really?!? I’ve carried both professionally and civilian my entire adult life and I never even considered doing that.....
If one has time to be doing such things at work, one should be updating one’s resume. Someone is always watching and bosses generally don’t like employees wasting time on frivolous play activities.
That’s the reason why, you know what is at risk. While Reeves may have gone to a few sessions of ISPSA/IPSC/IDPA etc to gain perspective, not one of the “stages” in the movie were done with even blanks, all done with props, effects edited in afterwards. Even a shot with a blank would mess up the off hand/body part if covered at arm’s distance or less when fired.
Anyways, many folks have no idea how easy it would be to shoot oneself....