No. I'm assuming you mean the auto injector for nerve agents. I think they would be controlled (which means unorthodox procurement methods would apply).
I doubt that they would be of use since the injection must occur in the first 30 to 60 seconds to work. It's unlikely that any civilian situation would provide the opportunity to realize that an attack had occured (by observing symptoms in yourself or others), find the injectors, and administer them before losing the ability to do so. This seems like pretty much military and emergency response team stuff to be of any real value.