Being an X-Marine, retired from LAPD and working 14 years as head of security for a private company, I am not impressed with tasers. They are a one shot opportunity for one suspect, hoping for only one suspect that not too high on drugs to feel the pain. Tasers are for close in incidents, if you miss or the suspect doesn't respond, you are in trouble and the suspect is more determined to hurt you, then it is a case stand and fist fight or "Run Forrest Run."
Nothing is more impressive than the sound of the slide noise cranking a round into the chamber, if the sound doesn't work, the next step is pull the trigger.
Forrest