FN America 20" HF 5.56 1:7 Rifle Gas System Barrel

FN America 20" HF 5.56 1:7 Rifle Gas System Barrel

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Part Number:RRFN36424
FN America's AR-15 barrels are hammer forged using the same proprietary high-grade Chrome Moly Venadium steel used in FN's machinegun that are barrels produced to handle the punishment of sustained fully-automatic fire. All of FN's barrels are Magnetic Particle tested to ensure that it is free of micro-stresses or flaws, resulting in consistent quality in every barrel. Both the bore and chamber are chrome lined to help resist corrosion, provide reliable chambering/extraction and extend the life of the barrel. The M4 style feed ramps and barrel extension provide consistent feeding. Finished with a Matte Black Manganese Phosphate finish to resist external corrosion and oxidation.


Caliber 5.56 NATO
Barrel Length 20"
Manufacturing Process
Hammer Forged
Twist Rate1:7
Gas SystemRifle Length
Inside FinishChrome
Outside FinishMatte Black Manganese Phosphate
Material Chrome Moly Vanadium
Muzzle Thread 1/2x28 TPI (Threads Per Inch)

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