20 years ago or so, when I was young and broke, I wanted a BUG, pocket pistol, hideout, summer/belly gun. I ran across a used but never fired Interarms HSc that was a 3 caliber gun! It was a .380 (9mm Kurtz), with extra .32 ACP (7.62mm) and .22LR barrels! If I remember right, all had different springs and the .38 and .32 used the same magazine and there was a 3rd .22LR mag. The .22 barrel was offset so the center fire firing pin would work on rimfire. This was all in a one piece plastic factory box with slots for the 2 extra barrels and magazines. I debated for a couple of weeks on it and decided to put money down.

A couple of weeks later the shop got in a pre 68' Walther PPK in .22 LR and I decided I wanted the Walther more. The shop changed over the layaway and I ended up with the PPK and to this day I'm still wondering if I made the right decision.

I've never seen an HSc in 3 calibers since or even heard of another one.