It's fairly common today to see .22 caliber versions of larger firearms, marketed to folks who don't want to spend as much for either the gun or its ammunition. For example, the ATI Sturmgewehrs, the Beretta ARX-160, and the GSG AK and MP5 lookalikes in .22 rimfire. Well, it's not a new trend - very few trends are actually new.

This is a .22 rimfire target pistol made by Francotte which was pretty clearly made to mimic the design of the C93 Borchardt.