Yeah, on the Mausers it means meters.
How's your shooting at 2,000 meters using iron sights?
Just for grins, 2,000 yards is 6,000 feet where 2,000 meters is 6,550 feet. I'm not sure if at over a mile it will make too much difference. Even at 300 meters the difference is only 84 feet. BTW, most Mausers are sited at 300 meters and will shoot high until you get to that distance. I guess they didn't think CQB ever took place.