Looks like it could be a Mk1/2 rifle by the patch where the PLATE, Tie, fore-end has been removed, patched and replaced with a screw and nut, tie, fore-end
Looks like it could be a Mk1/2 rifle by the patch where the PLATE, Tie, fore-end has been removed, patched and replaced with a screw and nut, tie, fore-end