Well I ordered on Wednesday morning and it arrived here today...that was unexpectedly fast.
I agree that it seems like a solid unit. Comes with a tall riser and the Aimpoint style base as well. I noticed that it would NOT fit my ARMS 31 mount, the base of the HS403A optic does not have a raised area for the screws and this causes the flat base to run into part of the ARMS mount. While I prefer QD I don't have a major complaint really, I can live with the screw mount.
The dot is very bright on the highest setting and it is crisp outside. Inside there is a massive amount red glare from the brightness, no surprise there. Outside it's bright enough to quickly pick up even though the photo doesn't come out well. I'll also see how it zeros this weekend but so far it's a neat little optic.
Z