Originally Posted by Tyrone
Is that an aluminum handguard on the AA or is it carbon or fiberglass?

According to this review it's a "synthetic handguard."

https://gunblast.com/Alexander-65Hunter.htm

Originally Posted by Jeff Quinn
Here, we are looking at one of Alexander Arms' latest versions of their 6.5 Grendel rifle; the eighteen inch Hunter. The Hunter model is, in my opinion, the perfect configuration for an all-around 6.5 Grendel rifle. The barrel is a fluted matte-black stainless steel with a medium profile, .700 inch at the muzzle, offering plenty of stiffness for fine accuracy, without being excessively heavy. The bore is button-rifled one turn in 7.5 inches. The muzzle is threaded 9/16x24 TPI for the attachment of a suppressor or brake, if desired. The barrel is free-floated inside a smooth two-inch diameter synthetic handguard which measures approximately twelve inches in length. There is one three-inch section of accessory rail at the forward end of the handguard, which may be removed or relocated every ninety degrees around the tubular circumference.