YHM FF Rail on a BM Pistol

One of my buddies at work has a Bushmaster Carbon 15 Type 97 pistol and he’s interested in a YHM 7" FF Rail that I’m selling. Should he have any problems having the rail installed on his AR pistol?

Here’s a link to the type of AR he has: http://www.bushmaster.com/catalog_carbon15_AZ-C15P97.asp

Here’s a link to the rail:
http://store.a51tactical.com/index.php?main_page=product_info&products_id=750&currency=USD

Thanks in advance for the help.

Doubtful from the picture as Bushmaster is using their own carbon-fiber uppers and lowers.

Call Bushmaster.