Mauser barrel question.

[Jarrettgs]

One of my K98s has the barrel code AVK on the left, and BYS on the right. AVK -which I found out was related to ruhrstahl, but I'm lost as to what BYS is? Anybody have any knowledge on this?

Thanks!

[TOULON44]

One of my K98s has the barrel code AVK on the left, and BYS on the right. AVK -which I found out was related to ruhrstahl, but I'm lost as to what BYS is? Anybody have any knowledge on this?

Thanks!

in my books i've Ruhrstahl A.G. Guss-stahlwerk Witten, witten, Ruhr for bys barrel code
hope this help

[Jarrettgs]

Appreciated very much! Thank you.