I know this is an older thread but figured you guys might be interested to see that some of the old original Gen 1(?) UWLs are still in the wild and still work. My light was ordered for me as a gift on 10/26/2011 for my first AR I put together, I had a problem with the first tapeswitch a couple months later but the replacement has been flawless since. Other than that all I've done in the 6 years and a couple weeks I've had it was change alot of batteries over the years, move it between a couple different rifles and shoot a couple coats of paint on it to keep a finish on it.
I'm a fairly low volume shooter but that light has always been on my truck rifle and it's helped me get many a coyote and spend years bouncing around in various vehicles and UTVs and 5k+ rounds and 6 years later is still going strong although it isn't very bright by today's standards, it has held up like a champ. It's currently on a 10.5" pistol upper along with a MD-ADS that serves as my HD/truck gun.
There also is a 2011 GEN 2 AA Battery Multi Reticle and a 2014 Micro Dot Classic MD-06 that I bought and used for awhile, but gave to a friend for his kid's rifles as I upgraded to some of your newer optics that are still going strong also. Someday I'm going to upgrade to your new brighter UWL once I get done buying uppers and ammo while they are as cheap as they currently are, learned the hard way from the Obama years to take advantage of it while it's here.
Just wanted to thank all of you guys/gals for what you do, your company, products, customer service, and extremely fast shipping times are amazing and I'm glad we have a vendor like you in our community. And while I might be sticking with my current UWL for now I make penance by ordering everything else I need that I can from you guys in the meantime lol. Here is a few cellphone pics from my workbench where I was putting my new upper, sights and Microdot together from yall.