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 20" Bull Barrel starts with their 5.56 chambered stripped bull barrel made from 416 SS utilizing the rifle length gas system. Includes a picatinny rail gas block and all parts are completely made in the USA..

Specifications and Features:
Material: 416 Stanless Steel
Barrel Type: Bull Barrel
Caliber: 5.56x45 NATO
Barrel Length: 20"
Twist Rate: 1:8 Right Hand
Barrel Option: Standard
Gas System Length: Rifle
Sight/Gas Block: Picatinny Rail Gas Block
Muzzle Device: N/A
Made in the USA

Fits:

AR-15 upper receivers

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