Knights Armament KAC rear 300m BUIS, full sized
This is a used item. Grade C+ to D. Low Grade. Some visible wear on mounting clamp, and in the click to open area. Turn knob will show modest to high wear. Fully functional. Some sights are painted or partially painted. Charlie's takes some rifles in trade, and offers great condition items for sale, and grades into High, Medium and Low grades.
Used on a number of military rifles. Great for clone builds.