WMD Guns AR-15 Carbine-Length Gas Tube Nitromet Black 9.75"

The WMD Guns Carbine-Length Gas Tube is a replacement gas tube for AR-15 and AR-308 rifles using a carbine-length gas system. It carries the carbine-length gas from the gas block to the bolt carrier group, and it is finished in black Nitromet, a salt bath nitrocarburizing treatment applied to the stainless steel tube.

The tube measures approximately 9.75 inches and is made from stainless steel. The Nitromet treatment is described as raising surface hardness to roughly Rc 55 and improving corrosion resistance compared with an untreated stainless tube. The tube ships with a roll pin for installation into the gas block and receiver.