The small screw end showing behind the triggers is likely the Trigger tension spring attachment.

The small screw end showing above the 'SAFE' marking is probably part of the safety assembly inside.
** note that the SAFE marking is engraved/inlayed onto a separate small plate that is dovetailed into the top tang all the way across the tang.
The screw end intersects that dovetail, very slightly.
If you get to the point where that screw needs to be removed,,the dovetailed plate w/SAFE on it should be removed first.
Otherwise turning that screw out may damage that plate, the dovetail being part of it.