SOLGW Liberty Fighting 5.56 NATO 14.5" Medium Contour Barrel - Mid-Length Gas

The Sons of Liberty Gun Works Liberty Fighting Barrel (14.5” 5.56 NATO) is purpose-built for shooters who demand uncompromising durability, accuracy, and duty-ready performance. Engineered from rugged 41V50 chrome moly steel and finished with a phosphate coating over a chrome-lined bore, this barrel is designed to thrive under high round counts and harsh conditions. Whether you're building a hard-use rifle or upgrading for reliability, this barrel delivers consistent precision with battle-proven toughness.

At its core, the Liberty Fighting Barrel features advanced 5R rifling paired with a 1:7 twist rate, optimizing bullet stabilization and reducing fouling for improved long-term accuracy. The .223 Wylde chamber enhances versatility, safely accommodating both .223 Remington and 5.56 NATO ammunition while maintaining excellent precision. Combined with a mid-length gas system, this setup provides smoother recoil impulse, improved reliability, and enhanced shooter control—making it ideal for both defensive and range applications.

41V50 Chrome Moly Steel Construction
High-strength steel ensures exceptional durability and resistance to heat and wear during sustained firing.

Chrome-Lined Bore & Phosphate Finish
Dual-layer protection enhances corrosion resistance, extends barrel life, and simplifies maintenance.

5R Rifling Technology
Improves accuracy while reducing bullet deformation and fouling for cleaner, more consistent performance.

.223 Wylde Chamber
Offers the flexibility to safely fire both .223 Remington and 5.56 NATO with enhanced precision.

1:7 Twist Rate
Stabilizes a wide range of bullet weights, including heavier projectiles for optimal ballistic performance.

Mid-Length Gas System
Provides smoother cycling, reduced recoil impulse, and improved reliability over carbine-length systems.

Medium Contour Profile
Balances heat resistance and weight for consistent accuracy without excessive bulk.

Precision Gas Block Fitment
.750" gas journal with a deep dimple ensures secure and repeatable gas block installation.

Standard Thread Compatibility
1/2x28 thread pitch supports a wide range of muzzle devices and suppressor mounts.

Specifications

• Caliber: 5.56 NATO / .223 Wylde chamber
• Barrel Length: 14.5 inches
• Material: 41V50 chrome moly steel
• Rifling Type: 5R rifling
• Twist Rate: 1:7
• Finish: Phosphate exterior with chrome-lined bore
• Thread Pitch: 1/2x28
• Gas System Length: Mid-length
• Gas Journal Diameter: .750 inches
• Barrel Profile: Medium contour
• Platform Compatibility: AR-15
• Installation Feature: Deep dimple for gas block alignment