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The gas tube is one of those small parts that does a big job. It routes hot gas back from the gas block into the bolt carrier key to cycle your action, and on a short-barreled AR running a pistol-length gas system, that tube lives in a harsh, high-heat spot. Rosco built this one to take the abuse. The ROS-GT-P-001 is a pistol-length tube from their Bloodline series, and it fits barrels set up specifically for a pistol-length gas system.
The standout here is the Melonite/Black Nitride treatment. This isn't just for looks, though the deep black finish does look sharp. Nitride bumps up corrosion resistance, wear resistance, and fatigue strength, which matters a lot for a part that heats up and cools down every time you run the gun. Tucked under a free-float handguard where you rarely see it, a more durable tube means one less thing to think about down the road. Compared to a standard tube, this one is built to go the distance.
Installation is straightforward if you've built an AR before. The tube pins to your gas block with a standard gas tube roll pin, typically a 5/64" by 5/16" pin, and the front end seats into the bolt carrier key when the upper goes together. Heads up though: this tube does not ship with a roll pin. Rosco includes their roll pins with their gas blocks, so if you're only grabbing the tube, make sure you have a pin on hand before you start.
Bottom line, if you're running a pistol-length gas setup and want a tube that holds up better than the basic option, this Rosco is an easy pick. Match it to a pistol-length gas block and you're good to go.
No, this pistol-length tube does not include a roll pin. Rosco packages their roll pins with their gas blocks instead. You'll want a standard gas tube roll pin, usually a 5/64" by 5/16" size, ready to go before you start your install.
It's made for AR-style barrels that are set up with a pistol-length gas system. Gas tube length has to match your gas block journal position on the barrel, so confirm your build is pistol-length before ordering. It will not work correctly on a carbine, mid, or rifle-length setup.
The Black Nitride treatment increases corrosion resistance, wear resistance, and fatigue strength over a plain gas tube. Since the tube sits under the handguard and cycles hot gas with every shot, that extra durability helps it hold up over a lot of rounds. It also gives the tube a clean, uniform black look.
Not if you've assembled an AR before. The tube pins to your gas block and the front end seats into the bolt carrier key when you reassemble the upper. Just make sure you have the correct roll pin and drive it carefully so you don't bend the tube.
| UPC | 181969500869 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | ROS-GT-P-001 |
| Model |
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