
Availability: In Stock
A CMMG AR-15 rifle length gas tube assembly is a core component for anyone building or maintaining an AR-15 platform rifle. This stainless steel gas tube is engineered for rifle-length gas systems, the longest standard configuration used on full-size AR-15 uppers. Whether you're assembling a new rifle from the ground up, replacing a worn or damaged tube, or troubleshooting a reliability issue, having the correct gas tube on hand keeps your project moving. The included roll pin simplifies installation, so you've got everything needed to get the job done without a separate parts run.
The rifle-length gas system is favored by shooters and hunters who prioritize reliability and shooter comfort. The longer dwell time—the interval between bullet departure and bolt carrier group unlocking—produces softer recoil impulse and smoother cycling compared to carbine or mid-length systems. That makes rifle-length setups popular for hunting rifles, precision builds, and configurations running heavier ammunition. Stainless steel construction resists corrosion and extends service life in field conditions.
CMMG has built a reputation for quality AR-15 components that work across a range of builds and use cases. This gas tube assembly reflects that focus on reliability and fit. Keep one in your spare parts kit for field repairs, or stock it during a build to ensure you have genuine, proven hardware from the start.
This is a rifle-length gas tube, designed for AR-15 uppers configured with rifle-length gas systems. Rifle-length is the longest standard gas tube option and is distinct from carbine-length and mid-length variants. Check your upper receiver or build plan to confirm which length your rifle requires before ordering.
Yes. The assembly includes the gas tube and the installation roll pin, so you have the essential fastener on hand. You'll need basic gunsmithing tools (punches, a bench block) to drive the pin during installation.
Yes. This gas tube assembly works for both new builds and replacement in existing AR-15 rifles. If you're troubleshooting reliability issues or replacing worn hardware, confirm your rifle is configured for rifle-length gas before ordering.
Stainless steel resists rust and corrosion, extending the service life of the tube—especially valuable if your rifle sees field use, hunting conditions, or storage in humid environments.


SKU: 115717513 • Width: 4.6in • Height: 0.3in • Depth: 15.5in • Weight: 0.13oz





Availability: In Stock
A CMMG AR-15 rifle length gas tube assembly is a core component for anyone building or maintaining an AR-15 platform rifle. This stainless steel gas tube is engineered for rifle-length gas systems, the longest standard configuration used on full-size AR-15 uppers. Whether you're assembling a new rifle from the ground up, replacing a worn or damaged tube, or troubleshooting a reliability issue, having the correct gas tube on hand keeps your project moving. The included roll pin simplifies installation, so you've got everything needed to get the job done without a separate parts run.
The rifle-length gas system is favored by shooters and hunters who prioritize reliability and shooter comfort. The longer dwell time—the interval between bullet departure and bolt carrier group unlocking—produces softer recoil impulse and smoother cycling compared to carbine or mid-length systems. That makes rifle-length setups popular for hunting rifles, precision builds, and configurations running heavier ammunition. Stainless steel construction resists corrosion and extends service life in field conditions.
CMMG has built a reputation for quality AR-15 components that work across a range of builds and use cases. This gas tube assembly reflects that focus on reliability and fit. Keep one in your spare parts kit for field repairs, or stock it during a build to ensure you have genuine, proven hardware from the start.
This is a rifle-length gas tube, designed for AR-15 uppers configured with rifle-length gas systems. Rifle-length is the longest standard gas tube option and is distinct from carbine-length and mid-length variants. Check your upper receiver or build plan to confirm which length your rifle requires before ordering.
Yes. The assembly includes the gas tube and the installation roll pin, so you have the essential fastener on hand. You'll need basic gunsmithing tools (punches, a bench block) to drive the pin during installation.
Yes. This gas tube assembly works for both new builds and replacement in existing AR-15 rifles. If you're troubleshooting reliability issues or replacing worn hardware, confirm your rifle is configured for rifle-length gas before ordering.
Stainless steel resists rust and corrosion, extending the service life of the tube—especially valuable if your rifle sees field use, hunting conditions, or storage in humid environments.
SKU: 115717513 • Width: 4.6in • Height: 0.3in • Depth: 15.5in • Weight: 0.13oz

