ULTRADYNE 556 ATHENA LINEAR COMPENSATE 1/2X28

ATHENA allows a shooter to easily upgrade their rifle to the Dynamount Sighting System. Gases have been vented forward which sends a lower percent of sound back towards the shooter. - Features include: - Vents Gases forward - Timing nut included for easy installation and indexing - Indexing slots compatable with the Dynamount Front Sight allow for a standard upright alignment or a 45 degree offset - 100% CNC-machined quality - 100% Made in the USA - LINEAR COMPENSATION - Forward-directed signature for greater shooter comfort. - 100% CNC MACHINED IN THE USA - 416 Stainless Steel with ultra-rugged salt bath nitride finish. - DYNAMOUNT READY - Barrel mounted sight option eliminates sight deflection associated with handguard mounting. - Athena .223 | 5.56 Technical Specs - CALIBER .223 | 5.56 or smaller - BARREL THREAD 1/2-28 UNEF-2B - MATERIAL - 416 Stainless Steel - Salt Bath Nitride Finish - MOUNTING Shrouded Timing Nut - MASS - Brake Only 109 grams | 3.8 ounces - Total 133 grams | 4.7 ounces - DIMENSIONS - Length 43mm | 1.69 inches - OD 24.8 mm | 0.975 inches - WRENCH FLATS 7/8 inch