The action seems to be a Remington rolling block, or at least it's copied from one if it's not.
The trigger appears to be missing, and the guard is misshapen. the metal from the receiver forward appears to have suffered traumatic injury in the past, etc.
It maybe one of those Paki/Afghani copies made by smiths in the Kyber pass region.
Does it have any markings on it? Rifling in the barrel, etc?