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The San Tan Tactical AR-15 Gas Tube in mid-length is one of those parts that doesn't get much attention until it matters, and then it matters a lot. It routes hot gas from the gas block back to the bolt carrier group so your rifle cycles the way it should, shot after shot. San Tan machines these from 304 stainless steel and finishes them with a nitride coating, which cuts down on corrosion, wear, and fatigue while keeping gas flow consistent. The matte black finish also keeps things low-key under your handguard.
Mid-length is the sweet spot for a lot of builds. It's generally the right call for barrels running roughly 16 to 18 inches, where the longer dwell time softens recoil and eases wear on your operating parts compared to a carbine system on the same barrel. That translates to a rifle that's a little more comfortable to run through longer range sessions, plus you get the extra handguard real estate that mid-length setups are known for. If you're building a 16-inch upper, this is a length worth strong consideration.
San Tan ships this as a kit, so the gas tube roll pin is included in the box. That's the small detail that saves you a separate trip or order when you're at the bench ready to install. Slide it into your gas block, pin it in place, and you're set.
San Tan Tactical has a reputation for tight tolerances and clean manufacturing, and this gas tube fits right in with that. Whether you're replacing a worn tube, upgrading an existing rifle, or working on a fresh build, it's a dependable component that does its job and stays out of the way. Simple, well made, and built to last through plenty of rounds downrange.
Mid-length gas systems are typically matched with barrels in the 16 to 18 inch range. That length gives you a longer dwell time, which softens recoil and reduces stress on your operating parts. If you're building a 16-inch upper, this is one of the most popular and well-balanced choices out there.
Yes. This ships as a kit that includes the gas tube roll pin needed for installation. You won't have to source that small part separately when you're ready to assemble.
It's precision machined from 304 stainless steel and finished with a nitride coating. That coating boosts corrosion resistance, wear resistance, and fatigue strength while helping maintain consistent gas flow. In plain terms, it holds up to heat and rounds better and keeps your rifle cycling reliably over the long haul.
San Tan's nitride gas tubes are made for the AR-15 and AR-10 family of firearms. As always, match the gas tube length to your barrel and gas port location so everything cycles correctly. Mid-length is the version to grab for barrels in that 16 to 18 inch window.
| UPC | 680599034206 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | STT-GT-M |
| Color | Black |
| Model | |
| Product Type | Gas Tube |
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