Some FN Mausers were barreled or rebarreled at the factory for the 7.62 NATO and sold to Israel. Possibly over runs from previous contracts.
Some FN manufacture Mauser bolts hand a too sharp corner at the left hand lug which caused some to crack at one leg of the split lug. recommended repair was to fit a surplus 98K bolt. Don't know what production range was affected, possibly a later commercial sporter action rather than a military contract.