So I already have a 17 and a 19, and I'm going back to carrying a Subcompact Glock. and I have an opportunity to get a Gen 4 27 pretty cheap. I plan on carrying 9mm and I think it would be kind of neat to be able to change caliber by swapping barrels and mags... So I'm wanting to know if anyone is EDCing a G27 with a 9mm barrel and if you had any issues with it and which barrel you are using (glock, stormlake, ect) THANKS! Wanna kill these ads? We can help!