The Bianchi model 13 was sold in parts. Pick your holster #13 in revolver size or auto size. Pick the harness that fit you #13A Small, medium or large. for the opposite side you could pick the #13B ammo pouch with belt attachment strap or #13C clip holder that held 2 magazines 9mm, 45, or .380. and strap to attach to your belt. I only bought 1 harness but 2 holsters Revolver 38/357 for K frame and Auto holster for S&W 9mm. Plus the 13B and 13C. Unfortunately I sold the Semi Auto rig with my only harness so I have the revolver holster and 13B left over. Yes, I did a few times wear it as a double gun rig just because I could.

My 1979 Bianchi Catalog lists Revolvers S&W Chief 38, Model 19 .357, Colt Det. 38, Ruger Security 6 357, and Charter .38 and 44. Semi Autos as Colt .45 Gov't, 45 Gold Cup, Commander. S&W m39, M59 9mm, Detonics .45, Walther PP, PPK/S 380, and H & K P9S.

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Gun Safety is no accident.