You don’t want to go with the standard mounts on ar-15’s to allow for more space on the rail and for optimum eye relief. Most cantilever mounts are generally offset by 1.5 inches, and for the lpvo you need to refer to your manual to see the eye relief of it.
@@lastmanstandingtacticalit’s a lot easier to present the weapon with a higher mount and get a good sight picture. Some cons are the height over bore you need to account for when shooting closer. Also shooting from the prone is a bit more difficult in my opinion.