I a big fan of Oleg Volk,who has a good many photos of models(who are shooters) using Primary Arms red dots on their weapons. THis is why I chose this company for my budget red dot. Well, gotta say - I am a little more than disappointed in the product. While, yes, it only cost me 101.00 for the item(got the M4 red dot from them). I did realize it was a budget item, I was expect it to be something sub-par of other budget red dots out there. If you put the brightness setting above 3 it blurs and star burst to the point you can tell if it was a cross or circul with a dot. I guess it is true what they say, live and learn, and better to buy once than twice. I will now be saving up for an Eotech 512,and eventually put the Primary Arms on the Moss 500 persuader.