My buddy and I bought one each and installed them on our Kel-tec .223's. Maybe we are just lucky, but we both sero fast and easy with a laser bore sighting tool, then shot like pros. These sights are insanely accurate. The dot is a "little" bit faint in bright sun, but when considering that the dot is basically dead center in the sight view, we didnt have too many problems. We had our doubts about a $20 red dot, but ... we could hit gator-ade bottle caps ate 75 yards. And 4" gongs at 100 yds all day long! Once zeroed, it styaed seroed, even after rapid firing for 60 rds. Basically, the bullet goes where the dot is... period. I know, I can hardly believe it either, but when they go on sale again, I will buy two more.

The red dot is not bright enough for outdoor hunting or using at an outdoor range. The dot if you can see it is also to small. Good for indoor use only. It is now colecting dust on a shelf. Purchased a Millet, works great.