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The One Horse OH-GT01 Pistol Gas Tube is one of those parts nobody thinks about until it matters, and then it matters a lot. On a direct-impingement AR, this little tube is what carries hot gas from the gas block back to the gas key on your bolt carrier group, and that pressure is exactly what cycles the action shot after shot. Get the length wrong and your gun short-strokes or beats itself up. Get it right and everything just runs. This one is cut to pistol-length spec, which is the shortest of the four common gas system lengths.
Pistol-length gas is meant for the short stuff, generally barrels around 10 inches or less, where the gas port sits close to the chamber. Because the gas has a shorter trip to make, the bolt gets moving fast, giving you a quick cycle rate that suits compact pistol and short-barrel builds. If you're putting together an AR pistol or a stubby 300 Blackout setup, this is the length you want. Plenty of folks run pistol-length gas on 300 BLK regardless of barrel length because of how that round burns, so keep that in mind if that's your caliber.
One Horse holds their parts to standard mil-spec dimensions, so this tube drops into common AR-15 gas blocks without any fuss. It measures right at pistol-length and pairs naturally with One Horse's own low profile .750 gas block if you're building a matched setup. As with any gas tube swap, you'll want the correct roll pin to lock it into the block, and a light touch when lining up the port so gas flows clean.
At the end of the day it's a straightforward, no-drama replacement or fresh-build part from an American-made brand that keeps things simple and reliable.
Pistol-length gas systems are built for short barrels, generally around 10 inches or less. That's where the gas port sits close enough to the chamber to make a pistol-length tube the right call. If your barrel is longer, you'll likely want a carbine or mid-length tube instead.
Yes. One Horse builds their parts to standard mil-spec dimensions, so this tube fits common AR-15 gas blocks without modification. It pairs especially cleanly with One Horse's own low profile .750 gas block if you want a matched setup.
Listings for this tube show the gas tube itself. Since a roll pin secures the tube into the gas block, it's worth confirming you have the correct pin on hand before your build so you're not stuck mid-install.
For a lot of builders, yes. Many run pistol-length gas on 300 Blackout regardless of barrel length because of how that round burns and cycles. It helps the action run more reliably than a longer system would on that caliber.
| UPC | 850078799210 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | OHGT01 |
| Length | 2'' |
| Shipping Weight | 0.046 |
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