DoubleStar uses high quality American made parts to ensure performance in your AR15. Why Choose DoubleStar Parts instead of the Other Guys; DoubleStar uses only the best parts to make their lower parts. Lesser Parts use metal injected molded or improper steel to cut costs. The lesser part will wear at an extremely high rate and need replacing sooner. DoubleStar parts are made to last for the lifetime of the weapon.
Their 18" Nitrided Fluted HBAR Barrel starts with their 5.56 chambered stripped HBAR barrel made from 416 SS utilizing the rifle length gas system. This fluted match barrel has the barrel extension installed, pinned, and gas port drilled. All parts are completely made in the USA..

Specifications and Features:
Material: 416 Stanless Steel
Barrel Type: Heavy Barrel
Caliber: 5.56x45 NATO
Barrel Length: 18"
Twist Rate: 1:8 Right Hand
0.750" Gas Block Seat
Barrel Option: Nitrided, Fluted
Gas System Length: Rifle
Made in the USA

This product is not returnable. Contact the manufacturer for warranty and assistance.