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The gas tube is one of those parts nobody thinks about until it matters, and this one from WMD Guns is built to keep doing its job long after cheaper tubes start to complain. It runs carbine length at right around 9 3/4 inches, so it drops into standard AR-15 carbine gas systems where the gas port sits closer to the chamber. Made from Mil-Spec 304 stainless steel, it handles the heat and fouling that come with running an AR hard.
The real story here is the finish. WMD takes the stainless tube and runs it through a salt bath nitrocarburizing process, giving it a surface hardness up around Rc 55. That translates to a part that shrugs off heat, resists corrosion, and won't scratch up easily. The Nitromet coating also gives it a deep matte black look that pairs nicely with a nitride or black-finished barrel and gas block, so it disappears under the handguard instead of glinting raw stainless.
This is a straightforward install for anyone comfortable working under the handguard. It's meant for carbine-length gas systems specifically, so make sure your barrel's gas port location matches before you order. The tube ships with a roll pin, which means you're not hunting for extra hardware when it's time to pin it into the gas block. Slide it through the block, line up the ports, drive the pin, and you're set.
WMD Guns has built a name in the coating world, best known for their NiB-X plating work along with a full range of performance finishes. The Nitromet gas tube is a good example of taking a simple, essential component and giving it a treatment that helps it outlast the plain stuff. Whether you're finishing a fresh build or replacing a tired tube, it's a small upgrade that earns its keep every time you pull the trigger.
This tube is built for standard AR-15 carbine-length gas systems and measures right around 9 3/4 inches. Before ordering, check that your barrel's gas port location matches a carbine setup, since pistol, mid-length, and rifle systems use different tube lengths. If your barrel is spec'd carbine, this drops right in.
Nitromet is WMD's salt bath nitrocarburizing process applied to the stainless steel tube. It brings surface hardness up around Rc 55, which improves resistance to heat and corrosion and helps the tube last longer under hard use. It also gives the part a deep matte black look that blends in nicely with other black or nitride components.
Yes, the carbine gas tube ships with the roll pin needed to secure it in your gas block. That saves you a trip to find extra hardware when it's time to install.
Not for anyone comfortable working under the handguard. You slide the tube through the gas block, line up the ports, and drive in the roll pin. A gas block, a punch, and a little care are all you really need to get it done.
| UPC | 855899003140 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 1-NMGTC |
| Product Type | Part |
| Color | Black |
| Length | 9 3/4 |
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