Any sight attached to the Katiba rifles are lopsided to the left of the rifle. After testing with a workshop map with ballistic lines, within the 6.5mm's effective distance this doesn't seem to affect aim much. I used the MRCO and at ranges of about 600m + I could see a very small deviation to the right of where my scope was pointed due to the offset. It's barely noticeable however aesthetically it's very apparent that the sights sit lopsided.

Images show just how apparent the offset is from a visual standpoint.
http://i.imgur.com/rZ3NHUk.jpg
http://i.imgur.com/O0HeLvr.jpg
http://i.imgur.com/r0wThMe.jpg {F25382}