The Faxon Firearms is proud to partner with Q on the development of barrels for their revolutionary new round, 8.6 Blackout. With barrels employing a 1:3 twist rate, 8.6 BLK channels rotational energy to increase energy on-target. Faxon 8.6 BLK barrels are fully stress-relieved, air-gauge tested, Magnetic Particle Inspected, and 11-degree target crowned to ensure superior accuracy. Constructed of 4150 CMV.