The markings on the butt plate are: B.4R10. Underneath is the number 5. Can someone point me to a reference to interpret the markings? I think the B.4 refers to Bay 4. Just in case, if anyone knows what the unit markings are, please let me know.

Thanks a heap!
Information
Warning: This is a relatively older thread
This discussion is older than 360 days. Some information contained in it may no longer be current.