Luger Questions

[Fr0zenEddie]

I'm fairly new to lugers and picked this one up a while ago. And from what I've read, its got me scratching my head as yo what it is I might have. Its a byf 41 mauser I believe based on the markings. Its also a Russian capture from the looks of it, and from what I've read the black plastic grips (which appear to be original and repaired at some point) could make this a "black widow"? Im looking for some opinions on if this is true or not. Any input would be appreciated.