Sons of Liberty Gun Works P3 Fighting 5.56mm 16" 5/8x24 Muzzle Thread Intermediate P3 Med Contour Chrome Lined/Phosphate Barrel 16-P3FB-556CL

The Sons of Liberty Gun Works P3 Fighting 16" Chrome Lined Barrel is a full-featured, combat-ready barrel engineered for AR-15 platform rifles seeking maximum velocity, superior ballistic performance, and reliable function in a non-NFA compliant configuration. Chambered in 5.56mm NATO and featuring a P3 medium contour rifling profile with an intermediate gas system, this barrel delivers outstanding accuracy, reduced fouling, and consistent performance under sustained fire and demanding field conditions, while the intermediate gas system length provides a smooth, balanced cycling impulse that reduces felt recoil and enhances overall reliability. The chrome-lined bore and chamber provide superior corrosion and wear resistance for extended service life, while the phosphate exterior finish offers reliable protection against the elements and hard use. Threaded at 5/8x24 for compatibility with a wide range of muzzle devices and suppressors, the 16" configuration maximizes muzzle velocity and downrange energy from the 5.56mm NATO cartridge while remaining fully compliant for civilian use, delivering the combat-proven reliability, precision craftsmanship, and uncompromising quality that Sons of Liberty Gun Works is renowned for. Sons of Liberty Gun Works P3 Fighting 5.56mm 16" 5/8x24 Muzzle Thread Intermediate P3 Med Contour Chrome Lined/Phosphate Barrel 16-P3FB-556CL