Forgotten Weapons video on HAC-7.

TFB article.

Excerpts from article:

Bob Holloway, then of Fort Worth, Texas, in the 1980s built on his experiences in Southeast Asia and Rhodesia to design a .308 caliber military rifle, what eventually became the HAC-7. His rifle was an amalgamation of Armalite, FN, and Kalashnikov designs, with a considerable amount of his own ingenuity thrown in. The result is now one of the most interesting “might-have-beens” of the 20th Century: A lightweight .308 infantry rifle two decades older than the FN SCAR-H.

In the 1980s, 5.56mm rifles were the hot item, and Holloway’s decision to use the more powerful 7.62mm round probably had a major effect on his ability to sell the weapon, and Holloway Arms Company closed in 1985.