I would assume they would "work" with any site you use.
they're standard height. they will cowitness w any site you have that cowitness'
The Daniel Defense A1.5 Fixed Iron Sights, Front & Rear can not be used on that rifle with a magnified optic.
The OpticsPlanet Exclusive Daniel Defense A1.5 Fixed Iron Sights with the brown finish will match the Daniel Defense FDE MK18 rail.
The OpticsPlanet Exclusive Daniel Defense A1.5 Fixed Iron Sights rear sight will work with a standard height A2 front sight gas block. If you have a railed gas block and want to use the OpticsPlanet Exclusive Daniel Defense A1.5 Fixed Iron Sights front sight it may not align properly if the gas block rail is higher or lower than the receiver.
It depends on how far you set the magnifier forward of the rear sight which will determine if you can use the OpticsPlanet Exclusive Daniel Defense A1.5 Fixed Iron Sights. But the magnifier will not fold over them.
No, these sights standard AR15 sight height and are not collapsible so they will exclude the lower 1/3 field of view.
This will come with sight adjustment tools.
If you order a set, the front and rear sight will match. So if you order the Optics Planet Mil-Spec+ colored models, they will both be Mil-Spec+.
The sights will co-witness with standard AR sights including mil-spec A2 options.