I don't use our classifieds yet because I'm not to 50 posts. However, I've been on M4Carbine.net for almost 10 years. What always got me about the classified section is the "NIB" descriptions on items where they also say, "Only mounted on the gun, never fired." This one usually applies to optics. Sometimes you'll see it on things like stocks and hand guards too. If it's been taken out of the box, it's not "NIB" anymore despite what condition it is in. Also, if you expect me to believe you bought a $600 aimpoint, mounted it and then never shot it, you're barking up the wrong tree.