Do not buy - NcStar Blue Four Reticle Reflex w/QR Mount

I ordered a total of two of these form OP and three from Amazon. All of them had very blurry reticles. I went as far emailing NC Star and they offered for me to send in one of the sights. Why would I want to send in a brand new product for repair/replacement?! They also commented they haven't seen this issue with this sight, but I've seen multiple reviews where people had to send back the first one due to blurry reticles. They also suggested that I may have astigmatism, but I just went to get my eyes checked a few months back and I have perfect vision. For me to get five in a row, all having the same issue, just screams a complete lack of quality control. I'll never order another product from NC Star ever again! BTW, if you ever have to do an exchange with Optics Planet, plan on it taking a couple of weeks!