Can anyone tell me if you can swap out the barrel of a 10mm and replace it with a .40 S&W on a Glock 20..I knew you could do this on a Glock 22 going from .40 S&W to .357 Sig...by design could one also go from a 10mm to a .357 sig barrel with no worries? The guy I saw do this has a KKM match stainless barrel..any idea of who to contact for these barrels? Thanks as you can tell I am a newbie
