Great for what it is - Bushnell BT71XPS Tac Optics Little P 1x 11mm Obj Circle Dot/BDC Black CR2032 Li

I must disagree with a previous review, I have this on a non-AR PCC with out the riser and it's the perfect height(fits my AR with riser). A Prism scope etched reticle is great if your battery dies or you have astigmatism because you can adjust eye focus like a rifle scope. It is a maximum point blank style BDC (know your arc to range for caliber, think 5.56, 50-200 zero) I agree it's small and probably not a plus $250 optic, but it is rugged and reliable.