Originally posted by dewhorse: I guess I could settle on an M38 but I want something pre-soviet.
If you're just wanting the pre-Soviet markings in a carbine configuration, try to find a M91/38. They're still less common, but they're out there. These were full-length pre-war M91 rifles that were cut down to M38 carbine configuration in the post-WW2 period. Many of them used pre-Soviet hex receiver M91s or Dragoons, and they retain the early markings. They just wouldn't be historically accurate for a pre-Soviet Russian soldier.
Your best bet for finding a pre-Soviet Mosin is just a standard M91 rifle. While M91/30s - both newly produced rifles and converted M91s - are much more common, there are still plenty of pre-Soviet unmodified M91s out there on the market.
I currently have two pre-Soviet M91 rifles in original configuration: a 1892 and a 1915, both made by Izhevsk.
I also have a M91/30 converted from an 1895 Izhevsk Dragoon. This retains the early barrel shank markings, but was upgraded to the later M91/30 configuration.