The RM1S is the 'sub-compact' version of the RM1C (compact. It is slim for a sub-compact. I believe that "Micro Compacts" are for pistols 1" width or less. Just my observation.
That was my point. Is the 380 grip the same externally as the 9mm or shorter front to back? If they are the same externally what did they do internally?
Maybe
Supposedly Glock is going to stop manufacturing all models and coming out with something ("V"} that stops these "Glock switches" from being able to be added. I'm just curious what are all the changes.