All I think I know about the irons is the A2 type rear sights had the small hole on a different plane than the big hole.
Carry handles for rifles adjusted to 800 meters, carbine carry handles only went to 600.
Troy, Daniel Defense and a few other BUIS’s used a “same plane” aperture. Meaning the only difference was for low light.
But ya, they will all work on rifles or carbines.
