Thank you pulling that lock out, it is indeed a detachable lock.

There is a drawing of such a lock in Alain Daubresse's book "The Francotte Dynasty", but does not show a connection to the safety. In other version of Martini's this type of wing safety interferes with the detachment.

Can you share pictures of the safety interior connection, inside the action and the back of the trigger group?

There are subtle differences in the Mosque and script that help narrow its date range. The person I am consulting with is part of small group of researchers currently working on a book about These Royal Afghan guns.

The mosque for example on your gun has very different details than the mosque you found in the internet. The script is also different. Apparently just like the format of the markings on the British Martini Henry, the Afghan Royal Armory had a marking format with specific meaning.

My friend implied an interest in your gun. He said he was never able figure out the export code from Germany to US.

Does your gun have any proof or view marks on the internal parts or on the barrel under the fore stock? The engraving is very European. The placement of the Mosque and script points to ownership marks added to the gun when it was brought to Afghanistan.

This is a very interesting gun. Thank you so much for sharing.