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 16" DS-4 Stripped Barrel starts with their 5.56 chambered stripped DS-4 barrel made from 4140 steel utilizing the Carbine length gas system. This barrel has the barrel extension installed, pinned, and gas port drilled. All parts are completely made in the USA..

Specifications and Features:
Material: 4140 Steel
Barrel Type: DS-4 Barrel
Caliber: 5.56x45 NATO
Barrel Length: 16"
Twist Rate: 1:9 Right Hand
Barrel Option: Standard
Gas System Length: Carbine
Made in the USA

Note: This product is new and being closed out; sold "As Is" and is not returnable to Cheaper Than Dirt. Please contact the manufacturer for warranty and assistance.