After that fateful day when he inadvertently summoned the apparition of the metallic woman, Michael had not yet tried to use the [Finger Gun] again.
First of all, he became quite busy dealing with a lot of business in Reborn, with the lack of resources and the current McTony's project. It was only after things settled down and he completed those tasks did he have enough time to sit down and try it again.
Second of all, Michael wanted to make sure that he would do it away from anybody's prying eyes. If he did summon the metallic woman again, then he didn't want the new Iron Maiden religion to become even more crazed than they were right now.
Whether he liked to or not, that group was spreading faster and faster throughout the Southern tip of the Queens region.
This was perhaps one of the only downsides of having the Golden Road so interconnected with a lot of territories. Things like these were spreading faster than normal.
