Taught to never assume, but assuming anyway, Since they are knife blades and more likely to be used as a knife rather than a bayonet, from a design perspective it would seem likely they were lanyard holes to prevent loss.
Taught to never assume, but assuming anyway, Since they are knife blades and more likely to be used as a knife rather than a bayonet, from a design perspective it would seem likely they were lanyard holes to prevent loss.