WMD Nitromet Pistol, Carbine, Midlength, Rifle Black Gas Tube AR15 AR-15

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This gas tube is the perfect complement to a NiB-X coated BCG and reduces wear from the gas key. It is made from mil-spec 304 SS and then salt bath nitrocarburized. The Nitromet salt bath nitride provides greater durability (Rc 55), heat resistance and corrosion protection. Matte Black Finish. Includes roll pin.