I decided to go with my Eotech 512. Actually, I couldn't decide, so I'm keeping the Eotech because it's cheaper! Aimpoint is like new, I've shot it once. I bought an Eotech and an Aimpoint together and took them both to an indoor range for about 200 rounds. The mount is in perfect shape except some markings on the screw where you can see that it was tightened. I have the original box and manuals for the Aimpoint and the mount. Paid $650 for the combo, asking $500. Willing to sell the optic for $450 and the mount for $75.