For what it's worth I'm also "ex-military" and the person you are replying to is in fact wrong. For many, a "manual safety" is a preference but for others confident in their training it's not necessary or desirable. I also own a P320 (but will be purchasing a Glock soon) and stopped shooting in shortly after these stories came out. Unfortunate, because all things considered I really did like that pistol. Anyway, depending on branch of service, deployment experience, time in service etc a lot of veterans' experience with handguns is minimal, amounting to firing enough rounds on the qual range once a year. No idea about OP's experience, but these things do tend to correlate if you get my meaning.