Figures out Skitter's gun

I heard a click, and bugs moved to the source of the noise to investigate.  Miss Militia had my utility compartment in her lap, and she was holding a handgun.  Mine.

“Only one shot remaining.  Two reasons that might be the case,” she said.  “Saving it for yourself, or it was used and you haven’t reloaded.”

“The latter,” I replied.

“Who have you been shooting?”

Your Director.  “Mannequin.  And shot through some boards so I could break them.”

“Oh?”

“Long story.  I haven’t really thought to reload it.  I don’t use the gun much.”