FN 36420 AR-15 5.56 NATO 14.7" Carbine Barrel

FN 36420 AR-15 Carbine Barrel

FN brings its legendary barrel-making expertise to the AR-15 platform with this hammer-forged 5.56 NATO barrel. Built from the same high-grade Chrome Moly Vanadium steel used in FN's machine gun barrels, this barrel is engineered to handle sustained use and deliver consistent performance.

Quality and Reliability

Hammer-Forged Construction: Each barrel is forged using proprietary techniques that create superior strength and consistency compared to button-rifled alternatives.

Magnetic Particle Testing: Every barrel undergoes rigorous magnetic particle inspection to detect and eliminate microstresses and flaws before leaving the factory. This quality control ensures you receive a barrel built to exacting standards.

Chrome-Lined Bore: The chrome-lined bore and chamber resist corrosion and heat erosion, significantly extending barrel life and ensuring reliable chambering and extraction through thousands of rounds.

Performance Features

• 14.7" Carbine-Length Gas System: Optimized for modern AR-15 platforms with balanced reliability and handling
• M4 Style Feed Ramps: Engineered for consistent feeding with a wide variety of ammunition
• Manganese Phosphate Finish: Matte black exterior resists external corrosion and oxidation
• Barrel Extension: Precision-machined for reliable function and durability

This is a professional-grade barrel built for shooters who demand accuracy, reliability, and longevity.