M98 front Lug crack

[Veni]

Hi everyone!
Has anyone come across a crack in the top-front M98 Lug?
It seems to have a crack at the bottom of the lug on one side, although it could possibly be a gouge. The receiver & bolt are new. I have shot about 30 rounds only. The receiver and bolt are original but have not been used at all since the time of manufacture in Brno, Czech Republic, some 70 years ago. I am attaching a photo. I would be grateful to hear what you think this is, a gouge or a crack, and whether I should change the bolt.  Thank you in advance.