[the silence that follows is amused, a lopsided smirk on his face]

So serious. I suppose that's the difference between a layperson and a veteran soldier. It's probably better this way.

[he shifts to lean against the doorframe, holding up both hands in a dismissive gesture]

Relax! I was just saying that someone here probably has an idea as to how that works and what ammunition it needs, so you can keep whatever's in that thing for special occasions.