Markings on G11 stock?

[Promo]

Anyone an idea what these markings on an G11 stock could mean?

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.

[Frederick303]

You have a 96/11 rifle stock. The markings on your rifle under the added stamp are the canton ownership marking and origional serial number of the stock.

[K31/43]

Hi,

serial number into the racks I believe.
Arsenal of Solothurn.
Arsenal name can be replaced by a number
K31/43