Like new Eotech 512.D65 Tactical Model AA Lithium batteries, just tried it on my M4 but doesn't work with these old eyes. In the box with everything it came with and a YHM extended screw knob.
June 2004 production, with Rev. F electronics upgrades, AND THE NEW RUBBERIZED INPUT BUTTONS like the 550 series (Previous Rev. F 511 and 512 models have the old membrane buttons).
$325 shipped USPS priority mail, insurance optional. Paypal preferred. Check my feedback on Ebay under "stuntmedic", over 250 transactions without a negative feedback.