Description Ensure the optimal performance of your AR15 with the CMMG 55DA15F AR Pistol/PDW Gas Tube Kit. This kit includes a gas tube designed for an AR15 pistol length gas system and an installation roll pin. Material and Quality Crafted from stainless steel, the gas tube guarantees longevity and resistance against rust and corrosion, ensuring consistent, reliable performance for your AR15. Easy Installation The gas tube kit includes an installation roll pin, making the assembly process straightforward and easy, even for beginners.