A 'you get what you pay for' item - high value - Vortex OPMOD Viper 1x24mm Reflex Red Dot Sight

Have to remove optic to replace battery, re-zero necessary. If you have tall or suppressor height sites you may have to remove/replace optic to adjust and lock down wind/elev. adjustments when complete. That would have been unacceptable to me, but knew up front, and have std. height night sights on pistols that this would be used on - so not issue in my application.
There is no adjustable auto shut off or shake awake. Not ideally suited stored for for defensive purposes.
For the price, all this is acceptable to me - I got the like field performance of others that cost $300+ more.

Generally has a low sight line relative to bore axis relationship, but that is also mounting plate/rail dependent.
6MOA Red dot is good for me, sight works as advertised.
Appears stout and quality construction.
Vortex warranty and product support adds value - needed screws, Vortex customer care responded to eml in an hour or so, sent NC and immediately.