Board Thread:Episode Discussion/@comment-24993958-20171021151743/@comment-4010415-20171025003019

Weiss gave her a gun magazine loaded with vials of Dust. I think she used her Aura to activate the specific type she wanted to use while pulling the trigger on her gun to give the Dust a way to leave her gun.

Her clones tend to become blurry and disappear when they don't get hit, as we've seen in the Black Trailer and Volume 1.