Our barrels are crafted in-house, ensuring the highest level of precision and quality. Each barrel undergoes a rigorous process, including stress relieving, air Gauge testing and an 11 degree target crown for exceptional accuracy. We begin with top-tier materials, choosing either certified 4150 mil-spec steel or 416-R stainless and subject each barrel to a series of tests throughout the manufacturing process. After being finished in nitride, every barrel is thoroughly inspected, with headspace individually checked using precision custom hardened Gauges. 11 degree target crown Twist rate - 1:8 Gas block diameter - 3/4 inches Gas block journal length - 1.9 M4 barrel extensions Pistol-length, button-rifled, government, SOCOM barrel Magnetic particle inspection (MPI) for optimal performance to ensure optimal performance, it is essential to conduct magnetic particle inspection (MPI) with precision and adherence to established protocols This non-destructive testing method is employed to detect surface and near surface discontinuities in ferromagnetic materials By applying a magnetic field to the test object and introducing magnetic particles, any disruptions in the magnetic field caused by defects become visible, allowing for accurate identification and assessment Proper execution of MPI requires a thorough understanding of the equipment, materials and techniques involved, as well as strict compliance with safety standards and guidelines