Nice-looking rifle--looks like it has a unit/inventory number added on the left side of the receiver ring. A lot of these rifles were apparently never issued, but the marking suggests that it was used by somebody--likely a military unit, but also possibly a school or some kind of cadet or militia organization.
If you want to improve the trigger pull for shooting purposes, you could always get lighter replacement main and trigger springs and reinstall the unaltered originals when you sell it or are called up for active service.
--DJ