As an update, I have been pleasantly surprised by the HW optics. Yes, they are airsoft optics, but surprisingly good for the money. They are nitro purged, so that is a step in the right direction. For just general training purposes, I am happy with them. I do a lot more patrolling and land nav than I do live fire, so I don't have a heavy firing schedule, but when I did do live fire they didn't blow up, melt, or fall off. The zero is a little fiddly and did shift a bit, but that's to be expected. Just make it a pre-combat check, just like the laser, and drive on.
If you have secondary rifles you need to stash or cache somewhere, this is an excellent option, IMHO.
And of course for milsim it will work just fine.