Geissele Cold Hammer Forged 5.56 NATO 16" 1:7" 1/2x28" Chrome Lined .750" Gas Journal Heavy Barrel With Gas Tube 05-3113

Geissele Cold Hammer Forged 5.56 NATO 16" 1:7" 1/2×28" Chrome‑Lined .750" Gas Journal Heavy Barrel With Gas Tube 05‑3113 is a premium-quality barrel engineered for durability and precision. Built using a cold hammer forging process, this barrel features a heavy taper profile, a chrome-lined bore, and a manganese phosphate exterior finish. It is paired with a Geissele-length gas tube and mid-length gas system, making it ideal for high-round-count applications. With rigorous high pressure testing and magnetic particle inspection, this barrel is trusted for reliability and performance.

• Length: 16.25 inches
• Weight: approximately 2.4 lbs
• Chamber: 5.56 NATO
• Twist Rate: 1 in 7"
• Rifling: Cold hammer forged
• Profile: Heavy taper
• Gas System: Mid-length with Geissele-length gas tube
• Gas Block Journal Diameter: .750"
• Gas Port Size: ~0.075–0.078"
• Muzzle Thread: 1/2×28"
• Barrel Extension: M4 feedramps
• Material: Chrome moly vanadium steel
• Bore: Chrome-lined
• Finish: Manganese phosphate
• Includes: Geissele-length gas tube