It happens on its standard barrel, the Metus, and Formido.

https://steamcommunity.com/sharedfiles/filedetails/?id=2970784482

Hey Saint Aurola !

Thanks for reporting on this sight flaw, i confirm the new shotgun's default sights are a bit too low for its own good, especially compared to other similar shotties with similar sights like in the picture below. I'll send your topic to the team so they can look into it, thanks again for pointing this issue !