Hi Bryan, The upper and lower receivers are fabricated from 6061-T6 aluminum alloy with a matte black finish. I cannot find any information indicating that it is an anodized finish.
Stay safe & have a great day!

Hi Bryan and welcome. This model has an Anodized Black which is durable.
Details
Chambering 30-06 Springfield - Operation Direct Gas Impingement Side Charging Semi Automatic - Barrel Length 16 - Weight 7lbs. - Rifling 1-10 Twist - Stock Collapsible - Pistol Grip A2 - Sights Optional - Magazine 20 rd. - Trigger Mil-Spec - Muzzle Brake Common 58-24 Flash Hider - Noreen BN36 Carbine Assassin is the new age battle ready M1 Garand in the tried and true 30-06 Springfield cartridge. Light and maneuverable for the most extreme tasks. Weighs pounds less than the old M1 Garand.
ANODIZED BLACK FINISH. This model may not be still manufactured.
Cheers and stay safe!