Gas Tubes
Combat Armory stocks 5 gas tubes, each sold with a roll pin included, covering every standard AR-15 gas system length currently in use. Options run from the 6.625" Pistol Length up through 9.75" Carbine, 11.75" Mid and 15.125" Rifle Length, priced from $2 to $14.99 depending on the length you select.
The 9.75" Mid Carbine gas tube is offered in a Premium, Made In The USA version alongside the standard option, for shooters who want a domestically made tube specifically for their build or repair project and prefer that sourcing over an import.
Match the gas tube length to your barrel's gas port location and gas block position before ordering; installing the wrong length will prevent the rifle from cycling correctly and may cause reliability issues during firing at the range or in the field.
No gas tubes match those filters.
Gas Tubes questions
Which gas tube length do I need?
It depends on your barrel's gas system: Pistol (6.625"), Carbine (9.75"), Mid (11.75") or Rifle (15.125"). Match the tube to your barrel's gas port location, not simply your overall barrel length.
Does the gas tube include a roll pin?
Yes, every gas tube in this section ships with its roll pin included in the package, so no separate purchase is needed to complete the installation on your rifle.
Is a USA-made gas tube available?
Yes, the 9.75" Mid Carbine length is offered in a Premium, Made In The USA version in addition to the standard tube, for shooters who prefer domestically produced components.
How fast do gas tubes ship?
Orders ship within 24 hours of purchase. Unused gas tubes can be returned within 30 days of delivery under the standard store return policy.