20" 5.56 NATO 1:9 Twist Phosphate + Chrome-Lined Rifle Heavy Barrel

20" 5.56 NATO 1:9 Twist Phosphate + Chrome-Lined Rifle Heavy Barrel

Durability meets precision—ideal for high-volume, long-range AR platforms.

The BRD 20" 5.56 NATO 1:9 Twist Phosphate + Chrome-Lined Rifle Heavy Barrel is purpose-built for shooters who demand long-term reliability, consistent accuracy, and superior heat tolerance. Sourced from trusted U.S. manufacturers and produced to ISO-9001 or better standards, this barrel is engineered for high round counts and enhanced service life.

The chrome-lined bore increases corrosion resistance and simplifies cleaning, while the phosphate exterior protects against wear in tough environments. Its heavy profile improves heat retention and shot stability during rapid fire or extended range sessions. The 1:9 twist rate offers versatility with a wide array of 5.56 loads, and the rifle-length gas system ensures smooth, reliable cycling. Backed by our MOA Guarantee when using match-grade factory ammo from a rest, this barrel is a go-to choice for DMR builds, precision rigs, and demanding shooters.

Specifications

• Finish: Phosphate + Chrome Lined
• Barrel Profile: Heavy
• Cartridge Compatibility: 5.56 NATO
• Gas Block Journal: 0.75
• Barrel Length: 20"
• Gas System Length: Rifle
• Platform: AR-15
• Twist Rate: 1:9
• Muzzle Thread Pattern: 1/2×28

From precision range days to high-volume tactical training, this barrel is designed to deliver exceptional performance and rugged dependability in any AR-15 build.