While I was in the Army, I had an ACOG on my M4. I REALLY liked it alot. I would like to get one for my AR-15. I dont wanted the newest models, because of their price and I never liked those Triangle crosshair on the newer ones. I liked the standard crosshair one that has 2 bullet drop crosshairs below the 1st on top. These two ranges being 400 and 600. I don't remember what model it was, but it had a CQB site mounted on top of it with a Tritium illumintate front sight on the ACOG. Can anyone help me out in identifying what model ACOG this is, and a good site I could use to purchase these cheaper than they would be say from the manufactorer's site?