Stag Arms 20" 5.56 Chrome-Lined/Phosphate HBAR 1:7 Rifle Length Barrel w/ FSB - STAG400076

Upgrade your AR-15 build with the precision-engineered Stag Arms 20″ 5.56 Chrome-Lined/Phosphate HBAR 1:7 Rifle Length Barrel featuring a pinned FSB. Designed for reliability and superior performance, this heavy barrel delivers exceptional accuracy and velocity, making it the ideal choice for long-range shooting and retro-style configurations. Whether you’re assembling a custom rifle or replacing a worn component, this barrel ensures consistent cycling and enduring durability in demanding conditions.

Key Features

• Chrome-Lined Bore and Chamber: Provides corrosion resistance and extended barrel life, reducing fouling for cleaner, more reliable operation during extended sessions.
• Phosphate Finish: Offers robust protection against wear and environmental elements, ensuring your barrel maintains peak performance over time.
• Heavy Barrel (HBAR) Profile: Enhances heat dissipation and stability, minimizing barrel whip for tighter groupings and improved precision at distance.
• Pinned Front Sight Base (FSB): Mil-spec F-marked for 5.56 NATO/.223 compatibility, allowing seamless integration with standard AR-15 uppers without additional modifications.
• 1:7 Twist Rate: Optimizes stabilization for heavier 62-77 grain bullets, ideal for match-grade ammo and tactical applications.

Specifications

• Caliber: 5.56 NATO / .223 Remington
• Barrel Length: 20 inches
• Gas System: Rifle Length
• Gas Block Journal: 0.750 inches
• Muzzle Thread Pattern: 1/2×28
• Platform: AR-15
• Weight: 56 oz
• Material: Chrome-Moly Vanadium Steel

Why Choose This Barrel?

For AR-15 enthusiasts seeking a balance of power and precision, the Stag Arms 20″ HBAR stands out by addressing common build challenges like inconsistent accuracy and premature wear. Its rifle-length gas system reduces recoil impulse compared to shorter setups, promoting faster follow-up shots and less stress on components. Customers appreciate the pre-installed barrel extension and headspacing, which simplify installation and ensure drop-in readiness. Built to mil-spec standards, this barrel excels in range days, competitions, or as a foundation for reliable home defense rifles, delivering the velocity boost of a full-length design without unnecessary complexity.

Ready to elevate your AR-15’s performance? This Stag Arms barrel is engineered for those who demand quality and consistency—add it to your build today and experience the difference in every shot.

Frequently Asked Questions

1. What makes a rifle-length gas system better for a 20-inch barrel?
Rifle-length systems provide smoother cycling and reduced recoil, ideal for longer barrels like this one, leading to better control and longevity for precision shooting.

2. Is this barrel compatible with both 5.56 NATO and .223 Remington ammunition?
Yes, the F-marked FSB and 5.56 chamber ensure safe and reliable use with both calibers, offering versatility for various shooting needs.

3. How does the 1:7 twist rate benefit my setup?
The 1:7 twist stabilizes heavier bullets (55-77 grains) for improved long-range accuracy, making it suitable for tactical or match loads without over-stabilizing lighter projectiles.