Faxon Firearms MuzzLok Ported Flash Hider 5.56mm 1/2x28 Black. With Faxon's Integral Muzzle Device Barrels customers will no longer be locked into a single configuration on their rifle build or be dependent on finding a capable gunsmith to pin & weld their muzzle device to their barrel. Shooters can choose from a 3 port muzzle device or slotted flash hider allowing the full assembly and disassembly of barrel and barrel nuts. Shooters are forever free to change their weapon's configuration. Faxon Firearms barrels are the pinnacle of value. Manufactured in-house these barrels are fully stress relieved air-gauge tested and 11 degree target crowned to ensure superior accuracy. Quality is imbued into our barrels from the start. From there each barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. All barrels are individually checked for headspace by precision custom hardened gauges. Specifications for Faxon Firearms MuzzLok Ported Flash Hider: Manufacturer: Faxon Firearms Color: Black Package Contents: Faxon Firearms MuzzLok Ported Flash Hider Faxon Firearms FFMD556PFHSQPQ: 5.56mm MuzzLok Ported Flash Hider Black