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No, each Aimpoint optic is handmade in Sweden and factory zeroed for minimal adjustment when first mounted on your firearm.
Yes it does !
The first four settings are NV brightness settings and the remaining are all daylight settings.
10 years of personal use. but for the most part, if there is an issue, it will be replaced or repaired anytime.
I'm unaware of the mounting height for Holosun magnifiers. But the mount is a lower 1/3 cowitness standard, so yes it should work well.
30,000 Hrs on setting 6
Yes, the Aimpoint Duty RDS Red Dot Sight will be compatible with any aftermarket T1/T2 mount. However, this optic has a centerline height that sits above a standard T1/T2, meaning purchasing any aftermarket mount will have the centerline of this optic at a slightly higher height.
The Aimpoint Duty RDS Red Dot Sight will only include (1) mount designed to keep the centerline of the optic at 1.59". You can use T1/T2 footprint mounts, but keep in mind this optic sits 0.40" - 0.50" higher than a standard T1 style optic on the same mount (this is due to the newly designed brightness adjustment button).
Yes, the Aimpoint Duty RDS Red Dot Sight will mount to a Unity Riser. It will also be able to fit all T1/T2 optic mounts.
The torsion nut mount with the Aimpoint Duty RDS Red Dot Sight is a high mount. This mount is 39mm tall.
The Aimpoint Duty RDS uses the T1/T2 footprint, meaning you can purchase any aftermarket lower 1/3 mount and it will work. However, the Duty RDS itself is taller than a standard T1/T2 meaning if you use a lower 1/3 mount, it will actually be slightly higher than a lower 1/3. It will come with an absolute co-witness mount that does equate to an absolute co-witness on the AR-15 platform.