It's slight, but it's there.
https://www.trijicon.com/na_en/support/faq_MRO.php
Is the MROŽ magnified?
The Trijicon MRO has a very slight magnification of 1.05x, which is within the range of competitive reflex-style sights. This slight magnification allows the MRO to have an optimally-focused target scene and a crisp, clear reticle dot. The slight magnification does not affect the usability or performance of the optic.