The Sons of Liberty Gun Works Solgw Lfb 13.7" 5.56 Chrome Lined Liberty Fighting Barrel is built as a hard‑use upgrade for AR‑15 builders who want dependable accuracy from a compact, threaded barrel. This 13.7 inch barrel uses 5R rifling cut from 41V50 chrome moly steel, then phosphate treated and chrome lined for long service life and consistent performance. A .223 Wylde chamber and 1:7 twist rate stabilize a wide range of 5.56 and .223 projectiles, while the DLC‑coated barrel extension and mid‑length gas system support smooth, reliable cycling.

This model’s 1/2x28 threaded muzzle makes it ready for your preferred flash hider, brake, or suppressor mount, and the .750 gas journal with a deep dimple simplifies secure gas block installation. The medium contour balances rigidity with manageable weight, making it well suited for general range use, training, and practical carbine competition builds. Backed by Sons of Liberty Gun Works’ reputation for no‑nonsense quality, the Liberty Fighting Barrel is a solid foundation for a durable AR‑15 upper.

Key Features:

• Manufacturer: Sons of Liberty Gun Works
• Model: Liberty Fighting Barrel
• Caliber: 5.56x45mm NATO / .223 Wylde
• Barrel Length: 13.7"
• Type: Threaded Barrel
• Thread Pitch: 1/2x28
• Gas System: Mid-Length
• Barrel Material: 41V50 Chrome Moly
• Rifling: 5R, 1:7 Twist
• Lining: Chrome Lined
• Finish: Phosphate
• Gas Journal: .750 With Deep Dimple
• Fit: AR-15