I don't have any experience with their Comp clones. I also do not have enough personal trigger time with this to say how it will function after 10K+ rounds. (most AR shooters won't shoot that many rounds in a lifetime) I can say that the build quality and feel, along with the countless review of the microdots leads me to believe that these will hold up to everyday shooting use and abuse.They are fun to play with, make a great training optic. I wouldn't trust them. They even tell you not to trust them.
I have ordered 2 optics from them. ML3 clones. One of them worked fine, one kept cutting off under "recoil" from a 5.56 middy. It was fine for the first 100 or so rounds, then developed the issue. They are cheap optics, but they have a good warranty and they are GREAT! for figuring out if you want to buy their "real" counterpart, or not.
If you understand their limitations, I think they are amazing.
I would not choose this as a deployment optic unless I had no other choice.(battery life is a killer at 1000 hours for active combat environment)
There are many on this SB.com who are limited to a budget and I read too many post and see too many pictures with UTG or Leapers type optics on nice rifles. $69 dollars and the Sportsmans Guide or Cheaper Than Dirt will get you a lot of Chinese junk. These type of optics are wastes of money IMHO and are best used on airsoft guns. For roughly $100 more you can get what my experience tells me is great quality for the average shooter. This is a real viable alternative at a VERY reasonable price.
For $169 delivered this is, IMHO, the best new out of the box microdot for the shooter on a budget.
Maybe the Bushnell TRS-25 is as good or better, but I don't have experience with it past holding it and the Primary Arms feels more substantial.
I'll report back as I beat this up and run it through some paces on a variety of rifles and a variety of distances. If it doesn't hold up or I find some hidden faults I'll let people know.