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anyone tell me what these extra numbers indicate

I believe they are someone's SS number, they definetly are not any Factory ID numbers

numbers are K-140-135-680-156, I assume it is possible for it to be someone's ID code but don't think that they are a SSN as those are xxx-xx-xxxx. Anyhow, thanks for the speculation. I hope others members may also offer their thoughts...

I may venture a guess as to them being evidence numbers in a criminal case. It was either stolen or used in a crime.

X1Ruger wrote:I believe they are someone's SS number, they definetly are not any Factory ID numbers

I think your on the right track as they fit the sequence of a drivers license number

After reviewing the numbers again I believe that they are a personal ID number of some kind. I think they could be removed & touched up to restore the rifle to nearer original factory condition. A shame it was done but not everyone looks at all firearms as collectible.

DAMN! I HATE VIBRATORS! THE ONES THAT MAKE MARKS!

Hey x1ruger, tried to reply to your PM, but it says that you have your PM receipt disabled. If you fix it let me know with another PM and I'll reply