Spent a bit on a red dot today for my ar. Noticed it looked the same as the BSA from the hi point. The dot was blurry and large. But I also had purchased a magpul rear sight. There was a nice co witness going and I noticed, when looking through the peep sight at the dot it became much smaller and more defined. I have astigmatism as far as I remember, does that play a part or is it just much easier to concentrate on the dot with the rear sight? Returned the dot for now, may have to pick it up again later. Got this stock instead.