https://czusamedia.s3.amazonaws.com/files/cz527_en.pdf
According to the manual:
"For safety reasons do not adjust the set-trigger travel as too short, as the rifle with an activated set-trigger is very sensitive to
shock, and during handling the rifle could unintentionally discharge."
Tell your friend to re-adjust the set trigger so it won't unintentionally discharge.
I have had a few CZ527's and CZ550's and they are da bomb when the set trigger is adjusted correctly.
According to the manual:
"For safety reasons do not adjust the set-trigger travel as too short, as the rifle with an activated set-trigger is very sensitive to
shock, and during handling the rifle could unintentionally discharge."
Tell your friend to re-adjust the set trigger so it won't unintentionally discharge.
I have had a few CZ527's and CZ550's and they are da bomb when the set trigger is adjusted correctly.