AR .223, 5.56 and .308 Black Nitride Gas Tube With Roll Pin - Mid Length 11.75in along with the Presma Inc

along with the Presma Inc anti walk retainer plates

One piece Machined in Aircraft Aluminum Alloy

• Super Lightweight

adding Standard ARCA

AR .223, 5.56 and .308 Black Nitride Gas Tube With Roll Pin - Mid Length 11.75in along with the Presma IncAR . 223, 5. 56 and . 308 Black Nitride Gas Tube With Roll Pin Mid Length 11. 75" SKU GTN03 Nitriding is a heat treating process that diffuses nitrogen into the surface of a metal to create a case hardened surface. Nitride is a not a coating , but a metal treatment which increases surface hardness, corrosion resistance, with no heat degradation. Correct dimensions and bends . Easy install. Comes with roll pin.