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The gas tube is one of those small parts that punches way above its size. It carries the hot gas from your gas block back to the bolt carrier group, and if it's off even a little, your rifle won't cycle right. Lantac's M-SPEC Rifle Length Gas Tube takes that job seriously. It's precision made from 306 stainless steel extruded tube, laser engraved, and built to a mil-spec fit so it drops into your AR-15 build without any drama.
This is the longest of the common gas system lengths, and it's the classic setup for 20-inch and longer barrels. That extra distance from the receiver to the gas port gives the gas more dwell time before it hits the bolt carrier, which translates to softer recoil, a smoother cycle, and less wear on your internals over the long haul. If you're putting together a rifle-length upper or replacing a worn tube on an old build, this is the part that keeps everything timed the way it should be.
Lantac has a solid reputation in the AR world for muzzle devices, bolt carriers, and small parts that just work. The M-SPEC line is their no-nonsense, mil-spec offering, giving you the material quality and dimensional consistency you want without paying for features you don't need. The 306 stainless construction holds up to heat and corrosion, and the silver finish is exactly what you'd expect from a bare stainless tube tucked under a handguard.
Every tube comes with the gas tube roll pin, so you've got what you need to pin it into your gas block and get to work. Whether this is your first build or your tenth, it's a dependable piece that lets you spend your time on the fun parts instead of chasing cycling issues.
Rifle-length gas systems are the traditional setup for 20-inch and longer barrels. If your barrel has its gas port drilled for a rifle-length system, this is the tube you want. Always match the gas tube length to your barrel's gas port location, since a tube that's the wrong length won't line up and the rifle won't cycle correctly.
Yes. Every M-SPEC gas tube ships complete with the gas tube roll pin, which is the small pin that secures the tube inside your gas block. You'll still need the tube pinned into the block and installed with the gas block properly positioned on the barrel to get everything timed.
The longer gas system moves the gas port farther down the barrel, which gives the gas more time to work before hitting the bolt carrier. That generally means softer felt recoil, a smoother cycle, and less stress on your internal parts over time. It's a big reason the rifle-length setup remains a favorite on longer barrels.
This M-SPEC version is bare 306 stainless steel with a silver finish, not black nitride. It sits under your handguard, so the silver color is a non-issue for most builds. Lantac also makes nitrided versions if you specifically want the blackened, corrosion-resistant coating.
| UPC | 640117876336 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 01-MSPEC-GT-RIF |
| Length | 17.3500 |
| Product Type | Gas Tube |
| Model | |
| Color | Silver |
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