Well lets make sure we are on the same sheet of music here
P99/AS is a traditional DA/SA which in case of a light primer goes back to DA
P99/QA has partially precocked striker and there is no second strike capability in case of a light primer, you ned to tab/rack in order to get back in the game
P99/DAO is a traditional DA every triggerpull, this one does not even have a decocker as the striker decocks itself each time the slide moves back and forth
The P99/QA sometimes gets listed as a DAO just like some say the Glock is a double action since by bulling the trigger you finish cocking the striker completly, however the P99/QA does not have second strike capability
So, in the case of such a misfire in a pistol without second strike capability, should not the pistol be continually pointed downrange for several seconds or more before opening the breech in case the primer has a delayed spark?
Ummm well there is three answers to that in my book
you can do this while at the range.... and think it is needed
you can pull the slide back about 1/8th of a inch to partially recock the striker again and then pull the trigger again
if you use the gun in "combat" you best train tab/rack over and over to have muscle memory to do this... you don't want to waist any time
this is the short version ...... and the tab/rack might not be a bad idea to train even for self defense situations with DA/SA or true DAO guns ...
I never been in such a situation but I feel like the first thing one would do is pull the trigger automatically again which is part of the reason all my guns but the two P7M8's I have are DA/SA.... but who knows