FWIW, I've carried both K-9 and PM-9 for at least 2 years apiece. Quite pleased with both - for what they are. K-9 mags do fit pm-9. K-9 loaded goes at 32 ounces, PM-9 at about 19.4 - and definitely more of a pocket gun. If ya shoot much, the money ya save between .380 and 9mm ammo will pay for itself pretty quick. And the 9 is a little hotter and heavier ...