Manufactured in house, these barrels undergo a rigorous process to ensure superior accuracy and reliability. Each barrel is fully stress relieved, air gauge tested and 11 deg target crowned to deliver exceptional performance. From the very beginning, we use only the best materials, including certified 4150 Mil-Spec steel, to guarantee top tier quality. Throughout production, each barrel goes through a battery of tests at every stage to ensure the highest standards. After being finished in Nitride for enhanced durability, the barrels are final inspected for precision. Every barrel is individually checked for headspace using precision custom hardened gauges, ensuring the perfect fit and long lasting performance. Mid-length gas system for smoother recoil and reliable cycling Finished with a QPQ nitride-coating Standard 1/2-28 muzzle thread for broad compatibility with suppressors and muzzle devices Equipped with a 3/4 inches diameter gas block 1.10 inches L gas block journal for secure and stable gas block mounting Equipped with an M4 barrel extension Magnetic particle inspected for quality assurance Precision 11 degree target crown for improved accuracy and consistent bullet trajectory