I'm new to the Kahr line of pistols, so I'm gonna ask a dumb question right out of the box. I have noticed the marked similarities in the different Kahr models. It looks like there could be a lot of interchangeability in components between the different models. Will a 4" barrel for a CT9 or a an ST9 work in a S9 slide and frame (that came equipped with the 3.6" barrel)? It seems like the barrel would just stick out of the slide a little farther?