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 Barrel, designed for shooters who demand reliability and accuracy in every shot. This heavy-barrel powerhouse delivers exceptional velocity and stability, making it the ideal choice for long-range target practice, competitive shooting, or tactical applications. Crafted from durable 4150 CMV steel, it ensures consistent performance whether you’re honing skills at the range or building a custom rifle that stands up to rigorous use.

Key Features

• Chrome-Lined Bore and Phosphate Finish: The chrome lining enhances barrel life and simplifies cleaning by resisting corrosion and buildup, while the phosphate exterior provides superior protection against wear in harsh environments—keeping your rifle performing flawlessly round after round.
• Heavy Barrel (HBAR) Profile: Built to handle sustained fire without overheating, this robust design minimizes barrel whip for improved accuracy during extended sessions, solving the common issue of heat-induced grouping shifts in lighter barrels.
• 1:7 Twist Rate: Optimized for stabilizing heavier 62-77 grain bullets, it maximizes ballistic performance for 5.56 NATO ammunition, delivering tighter groups at distances beyond 300 yards.
• Rifle-Length Gas System with Pinned FSB: Ensures smoother cycling and reduced recoil impulse compared to shorter systems, promoting faster follow-up shots and greater shooter comfort—perfect for those upgrading from carbine configurations.
• 1/2×28 Muzzle Threading: Compatible with a wide array of muzzle devices, suppressors, and compensators, allowing seamless customization to match your shooting style.

Technical Specifications

• Caliber: 5.56 NATO
• Barrel Length: 20 inches
• Platform: AR-15
• Gas System: Rifle Length
• Gas Block Journal: 0.75 inches
• Twist Rate: 1:7
• Finish: Phosphate with Chrome-Lined Bore
• Profile: Heavy (HBAR)
• Muzzle Thread: 1/2×28
• Weight: Approximately 56 ounces

Why Choose the Stag Arms HBAR Barrel?

In a market flooded with options, the Stag Arms 20″ barrel stands out for its mil-spec construction and proven durability. Shooters often struggle with barrels that lose accuracy under heat or fail to stabilize modern ammo loads—this HBAR addresses those pain points with its heavy contour for heat dissipation and fast twist for bullet versatility. Whether you’re assembling a retro-style rifle or a precision varmint hunter, it offers the balance of weight and performance that keeps you on target longer. Its pinned front sight base (FSB) provides a reliable zero reference, eliminating the guesswork in sighting systems.

Don’t settle for subpar components that compromise your build. Elevate your AR-15’s potential with the Stag Arms 20″ 5.56 HBAR Barrel and experience the difference in precision and endurance. Order now to enhance your shooting setup today!

Frequently Asked Questions

What bullet weights work best with this 1:7 twist barrel?

The 1:7 twist rate excels with heavier projectiles, such as 62-grain and 77-grain 5.56 NATO rounds, providing superior stabilization for improved long-range accuracy without over-spinning lighter bullets.

Is this barrel easy to install in a standard AR-15 upper receiver?

Yes, it’s fully compatible with mil-spec AR-15 uppers. The rifle-length gas system and 0.75-inch gas block journal ensure a straightforward drop-in installation, though professional fitting is recommended for optimal headspace.

How does the chrome lining benefit maintenance?

Chrome lining resists fouling and corrosion, making cleaning quicker and extending the barrel’s service life—ideal for frequent shooters who want low-maintenance reliability in demanding conditions.