So, help me out with this. I'm slightly confused and need some clarification. As I understand it, "normal" magazines (of appropriate model) will fit in an SF frame, however, the user will not be able to swap the the magazine release to the other side. I'm a righty, so I wouldn't care about having the magazine release on the other side. Thus I can use "normal" Glock 20/29 magazines with a SF frame?