WMD Nitromet Carbine Gas Tube - AR-15

Manufactured by WMD Guns
Manufactured by WMD Guns
10 Reviews
$12.99 $16.00

In Stock

Standard orders will ship out within 2 business days or less. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.



The WMD Nitromet Carbine Gas Tube is a standard Mil-Spec gas tube manufactured from stainless steel that has been salt bath nitrocarburized for extra resistance to heat and corrosion. The Nitromet finish gives added durability and surface hardness for improved corrosion resistance and a longer service life. Comes with gas tube roll pin.
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BrandWMD Guns
FinishSalt Bath Nitride
Gas System LengthCarbine
MaterialSteel - Stainless
Weight0.5 Oz

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see www.p65warnings.ca.gov

Ratings & Reviews

10 reviews

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I had to order a new gas tube when I tried to take the tube out of the a2 front sight post and it was stuck probably rusted inside so I kept it as a single unit now.. the wmd tube looks great, fits and installs very easy. And being stainless I can take it apart as I build up the ar platform to my likes. And as always PA's service and shipping is excellentSemper Fi

good gas tube


I replaced my gas tube before I put on a free floated rail and I probably won't replace it ever again because the rail is a pain in the balls to take off so I put the best gas tube I could find and this one is very nice I always try to put top notch parts in my rifle and this is one

Nitromet gas tube


Love the finish and for a few more dollars than a regular gas tube, you can have this

.300 blackout build


Ordered this gas tube for my .300 Blackout upper build and it looks great. Haven't completed the upper yet, but I expect everything to fit and work properly. Primary Arms' products, prices and service can not be beat. All my AR parts come from Primary Arms.

gas tube


shipping was fast and the gas tube will serve it's purpose

awesome product.


What can I really say, it's a gas tube. However, the finish and additional coating makes with tube worth the extra money. Went out and shot 300 rounds, and came home to clean my rifle. Upon inspection of the gas tube, I noticed internally it didn't hold much residue. Worth the buy, pick it up!

Works great


works great and looks awesome under the handguard

Easy Upgrade!


The gas tube was shipped quickly and it was a perfect fit with roll pin included!

Nitromet is better


I only mean it's better than bare metal. Any black coating is better from a tactical stand point.

Great product! Excellent Quality!!

by -

I ordered this to complete my AR47 build. The finish is great and seems a lot more solid than other gas tubes i've installed in the past. Working on a pistol build and will definitely order this one. It came with 2 roll pins.