If you can take a good picture of the trigger behind the trigger shoe it might help. Try to get some light in there with a flashlight.
These kinds of guns are usually equipped with a very light trigger.
The scope on this rifle, and the general “vintage” nature of it, may very well make it reasonably valuable. Take care not to knock it off a bench as it’s easier to damage this optic setup than most.
Additionally, you see the large spring on the optic? When I shot this type of setup as a kid I had to make sure that the optic returned to the rear of its position. It moves under recoil. If the scope sticks forward and you sidle up on it it will beat you in the face as it fails to move under recoil. And you will shoot a flyer...
It was more a problem with guns that were missing the spring, but sand can get in there and jam the optic forward and that’s a day to get an “idiot cut”.
Neat gun. You might want to post this in the “vintage” section to get more love.