Kubachi pistol - help, arabic (turk?), needed

[Rivkin]

Gentlemen,

Attached are the photographs of what I think is Kubachi pistol, circa 1857, damascus barrel, really nice made.

It has 4 signatures - lock, barrel, butt and barrel's lower mounting. I would greatly appreciate if someone with better arabic would translate, for I can just pickup a word here and word there. Thank you very much!