Badger Ordnance issued a PSA for those wondering what these little cuts are on the new C1 mounts. On all C1 mounts produced after 03/01/2020 they’ve included precision cut leveling marks on the inside of the front and back of the rings to accommodate new optics that have laser engraved leveling marks on the scope body. If that’s your preferred method of optic mounting, they’ve got you covered.