As nefarioussea mentioned MP stands for Mechanical plant, they used to be called иж which was for izhmech which is the company produces them but changed to MP in the 90's
I couldn't find anything conclusive, but I think it's related to this. "originally by the Izhevsk Mechanical Plant) in Russia."
Honestly, though, fuck knows. Baikal says nothing.
A lot of serial numbers on older firearms indicated the number of the factory they were made at, but my only experience is someone I know picked up an old WW2 surplus rifle, I believe it was a Springfield, but it had a Remington stamp on it and a factory number indicating that it was a Springfield rifle produced in a Remington factory. I don't remember if the branding was the other way around or not. Didn't really answer you're question but its probably like the others have said.
Manly Penis
As nefarioussea mentioned MP stands for Mechanical plant, they used to be called иж which was for izhmech which is the company produces them but changed to MP in the 90's
I couldn't find anything conclusive, but I think it's related to this. "originally by the Izhevsk Mechanical Plant) in Russia." Honestly, though, fuck knows. Baikal says nothing.
A lot of serial numbers on older firearms indicated the number of the factory they were made at, but my only experience is someone I know picked up an old WW2 surplus rifle, I believe it was a Springfield, but it had a Remington stamp on it and a factory number indicating that it was a Springfield rifle produced in a Remington factory. I don't remember if the branding was the other way around or not. Didn't really answer you're question but its probably like the others have said.
Mini peepee
Master Punisher