Rosco Gas Tube – Melonite Rosco Gas Tubes have an extremely durable Black Nitride finish that increases corrosion resistance, wear resistance, fatigue strength and cosmetic appeal. These gas tubes work great under a handguard because they are more durable than standard gas tubes. These gas tubes are compatible with barrels configured with a mid-length length gas system. Does not include a roll pin. Roll pins are included with Rosco gas blocks.
