ATHENA allows a shooter to inexpensively upgrade their rifle to the Dynamount Sighting System. Muzzle rise has been optimized as well, with gas vented at an angle then forward. This sends a lower percent of sound back towards the shooter, optimizing sonic performance over recoil. Like all Ultradyne muzzle devices, a timing nut is included for easy installation. The Ultradyne ATHENA allows a shooter to easily upgrade their rifle to the Dynamount Sighting System with indexing that allows an upright alignment or a 45 degree offset to each side. Gases are vented forward to reduce the noised to the shooter and has a timing nut for easy installation
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