I had hoped my review would begin under different circumstances... Customer Service... Sigh.
First, here is the product in question: http://www.holosun.com/index.php?route=product/product&product_id=63
Ordered on 6/20, received on 6/24. The sight appeared well built and finished. Decent mount, bright reticle, solid glass... Very light and streamlined profile (more so than an Aimpoint micro). Mounted it on an AR and let it sit a week 'on'. Checked on it today and it was dead as a doornail. Tried changing the battery... No dice, plus, the battery compartment hex-screw heads started to strip after a handful of disassembles... Called Holosun at 6:30 CT today and left a message detailing my experience thus far and requesting a return label. Got a call back within 5 minutes from 'Dale', he promised me an overnighted replacement by Thursday that I could wring out and keep, or return both units if I was still dissatisfied.
That's where I'm at thus far... Their 21st order for this sight sitting inop in my range bag, and another on the way. I'm gonna wring the piss out of the new one and then either follow up with a glowing report for Holosun products and service, or defecate all over them throughout the interwebs.
More to follow.