Description
A gas tube is one of those small parts that carries a big job on an AR-15. It routes the hot gas from the gas block back into the upper so the bolt carrier gets the push it needs to cycle. The One Horse OH-GT02 handles that duty for carbine-length setups, and it's made from stainless steel so it shrugs off corrosion and holds up to the heat and residue that build up over a long day at the range.
Where the OH-GT02 Carbine Gas Tube Fits
Carbine-length gas tubes run right around 9.75 inches and pair up with barrels in the 14 to 16 inch range. If you're running a classic M4-style carbine setup, this is the length you want. It's cut to Mil-Spec dimensions, so it lines up with standard AR-15 barrels and gas blocks without any fuss during install. Whether you're finishing a fresh build or swapping out a tube that's seen better days, it fits where a carbine tube is supposed to go.
Building With the One Horse Gas Tube
The roll pin comes included, which is a nice touch since that tiny pin has a habit of disappearing right when you need it. Slide the tube through the gas block, line up the holes, drive in the pin, and you're set. Stainless steel keeps the surface tough against wear from repeated heating cycles, and it carries that clean silver look that a lot of builders like when the tube peeks out under a handguard.
One Horse builds a full lineup of AR parts, from barrels and bolt carrier groups to flash hiders and gas blocks, so pairing this tube with a matching low-profile gas block from the same family is an easy way to keep a build consistent. For a simple, no-drama component that does exactly what it's supposed to, the OH-GT02 gets the gas where it needs to go and keeps your carbine running.
Key Specifications
- Manufacturer: One Horse LLC
- Manufacturer Part Number: OHGT02
- Model: OH-GT02
- UPC: 850078799227
- Gas System Length: Carbine
- Approximate Length: 9.75 inches
- Material: Stainless Steel
- Compatibility: Mil-Spec AR-15 barrels and gas blocks
- Recommended Barrel Length: 14 to 16 inches
- Roll Pin: Included
- Shipping Weight: 0.055 lbs
What’s Included
- One Horse OH-GT02 carbine-length gas tube
- Roll pin for installation
Frequently Asked Questions
What barrel length works with the OH-GT02 carbine gas tube?
Carbine-length gas tubes are designed to pair with barrels in the 14 to 16 inch range, which covers most standard M4-style AR-15 builds. The tube measures roughly 9.75 inches. If your barrel has a carbine-length gas port location, this is the tube you want.
Does the One Horse gas tube come with a roll pin?
Yes, the roll pin is included in the package. That small pin secures the tube to the gas block, and having it in the box means you can install right away without hunting down the part separately.
Will the OH-GT02 fit my existing gas block?
The tube is cut to Mil-Spec dimensions, so it fits standard AR-15 gas blocks and barrels. It works with both standard front sight bases and low-profile gas blocks. Pairing it with a low-profile block from the same One Horse lineup keeps a build nicely matched.
Why choose a stainless steel gas tube?
Stainless steel handles the heat and corrosion that come with routing hot gas shot after shot. It resists wear and rust well and holds up over high round counts, plus it carries that clean silver finish many builders like. It's a proven, reliable choice for a working AR.





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