Upgrade your AR15 with the CMMG 55DA193 Gas Tube Kit, designed specifically for carbine length gas systems. This essential component ensures optimal gas flow for reliable cycling. Durable and made from stainless steel, this gas tube kit includes an installation roll pin for a hassle-free setup, making it perfect for both new builds and repairing existing systems. Stainless Steel Carbine Length For Builds or Repair Enhance your firearm's performance and reliability with the CMMG Gas Tube Kit.