Faxon Firearms Muzzlok 3 Port Muzzle Brake 8.6 BLK M18x1.5 Black. By using the extension nut to adjust the length of the device you can adjust the rotational timing. It is recommended that you tighten the device to the recommended torque specification of 20-25 foot pounds. By not having to overcome the resistance of the crush washer this allows devices to be removed and reinstalled in the field if desired. Specifications for Faxon Firearms Muzzlok 3 Port Muzzle Brake: Manufacturer: Faxon Firearms Color: Black Projectile Caliber: .338 Caliber Caliber: 8.6mm Blackout Finish: QPQ Nitride Threads per Inch: 11/16x24 Length: 2.4 in Weight: 3.2 oz Package Contents: Faxon Firearms Muzzlok 3 Port Muzzle Brake Faxon Firearms FFMD863PMBSQPQ: Muzzlok 3 Port Muzzle Brake 8.6 BLK M18x1.5 Black