Very nice sighting system. But the vast majority of us who own an AR or four will never have reason to use more than rudimentary sights, or a simple reflex with backup iron sights. I hand a laser on mine, because I might end up using them at night, but such lasers are good for only closer ranges anyway, and shooting ‘off-hand’. A really useful reflex, made in Georgia, USA can be purchased for under sixty bucks and will be more than adequate if sighted in properly with back up sights integrated into the sighting picture.
My AR-15 is used for coyote hunting and I need the ability to shoot at 200 yds or more sometimes and a one power reflex just won’t cut it for a coyote at those ranges. I do keep it at one power for quick close in shots most of the time because if I have a long shot I usually have time to crank it up.
By the way the AR-15 has become the weapon of choice for coyote callers, because it is extremely accurate like a bolt gun, but also gives the opportunity for fast follow up shots when you have more than one coyote come to the call.