The Faxon Firearms Rifle-Length Gas Tube (Faxon part no. ARGasTube-Rifle) is a direct-fit replacement gas tube sized for rifle-length gas systems on the AR-15 platform. Faxon machines it from stainless steel rather than the more common chrome-moly, so the tube resists corrosion and pitting without needing a coating that can flake or wear over time. It’s built to mil-spec dimensions, so it drops into a rifle-length gas block and carrier key without any fitting. This is a straightforward, durable replacement for a rifle-length AR build that’s due for a gas tube swap or a from-scratch upper build.

Key Specifications

• Sized for rifle-length gas systems, matching the gas port location on a rifle-length gas block.
• Machined from stainless steel rather than chrome-moly for better corrosion resistance.
• Bare stainless finish means no coating to flake, discolor, or wear off with heat cycling.
• Built to mil-spec dimensions for drop-in fit with standard AR-15 gas blocks and carrier keys.
• Secures in the gas block with a standard roll pin, the same as factory AR gas tubes.

Frequently Asked Questions

Will this fit a carbine or mid-length gas system? No, this tube is sized specifically for rifle-length gas systems; a different length is needed for carbine or mid-length upper builds.

Does the stainless steel tube need to be coated or treated? No, stainless steel resists corrosion on its own, so no additional coating is required.

Buy the Faxon Firearms Rifle-Length Gas Tube

Get a corrosion-resistant, mil-spec gas tube from Faxon Firearms in our AR gas system parts selection. Order it from our Lubbock, Texas gun shop for fast, direct shipping right to your door.