Gunner 458 Socom 3 Port Muzzle Brake w/ MuzzLok Our Gunner 3 Port Muzzle Brake is the ideal blend of usability, versatility, and recoil reduction. The 3 ports work to sequentially capture the propellant gasses and redirect them to the sides for maximum recoil reduction. On barrels of all lengths, the Gunner significantly reduces felt recoil. Product Details: Material: Steel Finish: Salt Bath Nitride Thread: 11/16x24 TPI Weight: 3.2 ounces w/ MuzzLok Nut Caliber: 458 Socom or Smaller MUZZLOK Faxon's invented in Muzzlok in feature on this device allows for easy timing and installation of your device without the need for a crush washer or shims. 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. No crush washer needed. Attach and remove in the field. Time your muzzle device quickly and easily. Specifications for Faxon Firearms 450 Bushmaster/458 Socom Gunner Muzzle Brakes: Manufacturer: Faxon Firearms Caliber: .458 SOCOM, .450 Bushmaster Finish: Salt Bath Nitride Fabric/Material: Steel Threads per Inch: 11/16x24 Weight: 3.2 lb Package Contents: Faxon Firearms 450 Bushmaster/458 Socom Gunner Muzzle Brakes