Made in the usa, the athena is ultradyne's linear compensator.It gives a cleaner appearance for a sleek look compared to traditional brakes and is the most cost-effective way to upgrade a rifle to the dynamount sighting system.Muzzle rise has been optimized, with gas vented at an angle then forward.This sends a lower percent of sound and gasses back towards the shooter, optimizing sonic performance over recoil.A timing nut is included for easy installation.Finish: Black NitrideModel: AthenaMaterial: 416 Stainless SteelThread Pattern: 1/2"-28 tpi