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Gas tubes don't get much glory, but they're one of those parts that either work perfectly or ruin your whole day. LBE's rifle-length gas tube is built from seamless stainless steel and treated with a black melonite finish, giving it better resistance to heat cycling and corrosion than a bare stainless tube. It's made to mil-spec dimensions so it fits standard rifle-length AR-15 gas systems without needing to be bent, forced, or modified to seat correctly.
Melonite is a nitride treatment that hardens the surface of the steel, which helps the tube shrug off the repeated heating and cooling it goes through every time you fire a shot. Over hundreds or thousands of rounds, that translates to less pitting, less discoloration, and a part that still looks and functions like new long after a bare tube would start showing wear. It also gives the tube a clean black finish that matches up well with most modern builds instead of the raw metal look of an unfinished tube.
This is a rifle-length tube, so it's meant for rifle-length gas systems specifically, not carbine or mid-length setups. Get the length wrong and the gas port timing will be off, so double check what your upper needs before ordering. Installation is straightforward with basic armorer's tools, you're just aligning the tube with the gas key on your bolt carrier and securing the gas block, and LBE includes the roll pin so you're not stuck sourcing one separately.
LBE Unlimited has built a reputation among builders for turning out solid, no-nonsense AR components at fair prices, and their gas tubes are no exception. Everything they make, from uppers and bolt carrier groups down to small parts like this tube, is manufactured domestically with attention to consistent quality control. Whether you're finishing out a budget-friendly build or replacing a tube that's seen better days, this one gets the job done without any surprises.
No, this is a rifle-length gas tube and it's sized specifically for rifle-length gas systems. Using it on a carbine or mid-length upper will throw off your gas timing and cause reliability issues. Make sure you know your barrel's gas system length before ordering.
Yes, the roll pin needed to secure the gas tube to your gas block is included. You won't need to source that separately before installing.
Melonite is a nitride surface treatment that hardens the steel and improves its resistance to heat and corrosion compared to a bare stainless tube. It helps the tube hold up better over time under the repeated heat cycling that comes from firing.
This tube is designed and sized for the AR-15 platform. AR-10 rifles typically use a different gas tube length and diameter, so check your specific build's requirements before assuming compatibility.
| UPC | 706612407991 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | ARGTR-BLK |
| Color | Black |
| Product Type | Gas Tube |
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