LVOA
Common size for most ARs (and SMGs using Digital Scope comparisons with ARs equipped with Digital Scopes)
416 and Mk18
I've noticed with a few ARs, there is a scope size discrepancy when zooming in. It appears the zoom level is the same, just the size of the scope in one's view differs. This makes using the reticles a little more difficult as there is no consistency between certain gun/scope pairings. It appears to be a size discrepancy across all scopes. LVOA scopes are larger in field of view, where as the scopes are all appear smaller in the 416 and Mk18 fields of view. Would like to request normalizing the scope size in view across all weapon platforms, especially for those that appear smaller in view.
Edit: It appears that the scope size discrepancy is related to the newer released weapons, The PDR's scope size in view for example is even larger than that of the LVOA.