Faxon Barrels 8.6 BLK barrels are machined from raw bar stock and are fully stress-relieved air-gauge tested Magnetic Particle Inspected and have an 11-degree target crown to ensure superior accuracy. Constructed of 416-R Stainless Steel each barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. Includes barrel nut adapter and thread protector. *Not compatible with Faxon FX7 bolt action receiver.