A question about Swiss K-31 number

[LiGuang]

I find there is a number 58 in the metal part shown in the photo below. The number is nothing similar to the serial number on the major parts. I checked photos of other K-31. There is even no number there.


http://s1083.photobucket.com/user/LiGuang/media/Swiss%20K-31/IMG_1270_zpse4409124.jpg.html?sort=3&o=0

 

[MBBlaster]

I think it means it was overhauled in the arsenal in 1958

 

[Glock4ever]

I concur. The markings on the tang are indicators of repairs performed by the arsenal.

 

[buffdog]

DIOPTER is the go-to man on Swiss Rifles. It could also be that the rifle was taken out of service in 1958. Swiss soldiers were allowed to keep their rifle after completing service.

 

[tacfoley]

Arsenal visit.

tac
swissrifles.com

PS - FFR, there is no hyphen in K31.

 

[LiGuang]

Thanks all.

 

[diopter]

Refurbed/ Rearsenaled in 1958.

http://theswissriflesdotcommessageb...ers-Stock-Rearsenal-Stamp-Survey#.VOyzGObF_x0