The green dot is larger in diameter than i was expecting and the brightest dot i could imagine. It takes 3 shots to put you on the bullseye.

Just have to remember to turn off by turning the knob to g or r. Shot 50 rounds and held zero without any issues. Dont hesitate on this one.

This has multiple options to include the type of reticle and color with brightness options. Much quicker than open iron sights and very accurate.

The rail retention screws are threaded on a cheap lathe, my proof of this is that the threading doesn't conform to any identifiable us or metric thread pattern. Held zero on none.

I know it was cheap but was hopping it would at least work. Not wasting my time sending this back to the seller.