I have two, Like New In Box Trijicon ACOG sights for sale. Bought them a couple months ago and mounted them to check fit. Never got to fire the rifles with optics mounted. Sold the guns, now the optics have to go. These have tritium back up iron sights built in to the top of the unit. Also, tritium lights the reticle inside. Here is a link to the exact item: Trijicon, Inc.
$850 each shipped (These retail for over $1,150) NOW $749 DELIVERED!!!!!!!!