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FAXON BARREL 16″ BARREL, 5.56 (AR-15), 4150, Black QPQ, M4 Profile, Carbine Gas
• Barrel Material: 4150 CMV Steel • Barrel Type: Button Rifled • Barrel Caliber: 5.56 NATO • Barrel Twist: 1:8 • Barrel Length: 16" • Barrel Profile: M4 • Barrel Gas System: Mid Length • Inside Finish: QPQ Nitride • Outside Finish: QPQ Nitride • Muzzle Thread: 1/2-28 TPI (Threads Per Inch) • Gas Block Diameter: .750" • Barrel Extension: M4 Magnetic Particle Inspected