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Title: mine didnt hold zero very well
Review: had this mounted to a hi-point 9mm carbine. looks very cool but i had to adjust the dot every time i went to the range. i found it was always a little off every time i went. i also noticed that the red dot itself is not very crisp. you can see the rays of light shining from the center of the dot. i dont know if you can picture what i am trying to describe. just know that the red dot is not very crisp and the dot does not hold zero very well. at least not on a 9mm.
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