This is a November 1990 two page ad that appeared in Guns & Ammo magazine promoting the Colt AR-15A2 Sporter HBAR. The dimensions of the ad is 17 in. x 11 in. The ad features Jerry Barnhart who was a ‘Team Colt’ member at the time.
The Colt AR-15 Resource
"A site dedicated to the history of the Colt AR-15 rifles, carbines and associated items"
The Colt AR-15 Resource 