First eotech-will never use anything else - EOTech 517 A65 Holographic Weapon Sight (HWS) Buttons On Left Side w/ Raised 7mm Base (517.A65/1) for M4 & M16

Put this sight on a RRA Ultimate Operator AR15,out of the box at 50 yrd sight in 1st shot 3 clicks left of dead center. Never realized how important a 1 MOA dot was until shooting with an Eotech on my rifle at 100 yrds, most reflex or holografic sites with a even a 2 MOA block out most if not all of the center of the target at 100 yrds, not Eotech. 1 to 1 1/2 inch groups at a 100 with this sight are no problem. At first I thought the prices for these things were outrages, but after adding up all the money on the JUNK stuff I bought and tried I would have saved myself alot of time, frustration and money by just purchasing the Eotech to start with. Since purchasing this Eotech I have added a 512 and magnifier to my DPMS AR15. These sights make both guns FAR more accurate than ever before. I'm sold I will never again spend my time or money on anything but Eotech optics.
Pros: More than I can list
Cons: NONE

This review was written in the old system and had content requirements that are different than reviews written today.