M38 carbine purchase- ID

[cpc]

Hello, went to a small local auction yesterday to pick up some fishing gear and they brought out a few guns that were not listed and I bought this one. I’m not very familiar with SB weapons but based upon the condition I decided to bid. It’s all matching with plenty of cartouches etc. I’m not sure if the stock is a modified M38 or M44 as it has a groove for the bayonet. It’s a 1941 izhevsk with a dark sling. All the cartouches are Triangles, etc so it appears that it wasn’t worked on at another arsenal. I can post more photos if needed. Any comments are appreciated, regards.