Ok guys i had a little time today to make a short video. Forgive the ****** quality of my cell phone video. Anyways, this is showing you guys that the 9mm Shield barrel does fit in the .40 Shield slide/frame. All together, you can shoot 9mm with it all day long. Many people have asked for it, so here it is. Now the world knows the truth of the matter. If you guys have anymore questions, feel free to ask and i'll see if i can help.
Shield 9mm barrel in Shield .40 frame - YouTube