Best red dot for the money! - Holosun Paralow HS503C Circle Dot Sight

I have several HS 503's and a 515...you can not beat these for the mony..they work! The circle dot ala e otech style is the absolute best at CQB ranges bar none! I also works if you have slight astigmatisms etc...the circle does not turn nto a cluster ec. In addition, yo can take this abpart to use various combinations of spacers etc to s=adjut the height...I use iton the low mount with a UTG QD lever 5 slot rail, that is about $15.....perfect on and off...no problem!!