Description
The gas tube might be one of the smallest parts in your AR, but it's doing serious work every time you pull the trigger. This mid-length tube from Sons of Liberty Gun Works is built from stainless steel and finished with a Quench Polish Quench treatment, which is the same nitride process a lot of quality barrels and gas blocks get. That means it stands up to the heat and pressure cycling that a gas system deals with day in and day out, and it resists corrosion instead of pitting over time.
What the QPQ Finish Brings to the Table
QPQ is a salt bath nitride treatment that hardens the surface and leaves a smooth, non-reflective black coating. On a gas tube that translates to less carbon and fouling clinging to the metal, plus a finish that visually disappears once it's tucked under your handguard. It also happens to match nitrided barrels and gas blocks nicely, so if you're going for a consistent look on your build, this plays well with the rest of the parts.
Getting the SOLGW Mid Gas Tube Dialed In
This tube is bent to standard mid-length spec, so it drops into AR-15 and AR-10 style gas systems without any fuss. Mid-length is a popular choice for 16-inch and longer barrels because it smooths out the recoil impulse and eases the wear on your bolt and carrier compared to a carbine-length setup. The roll pin is included in the package, which is a nice touch since that little pin is easy to lose track of when you're piecing a build together.
Why Folks Trust SOLGW Small Parts
Sons of Liberty has earned a reputation for parts that hold up under hard use, and this gas tube fits right in with that. Builders who run their rifles hard tend to reach for SOLGW components because the quality is consistent from part to part. Whether you're assembling a fresh upper or swapping out a worn tube on a rifle that's seen some rounds, this is a straightforward, dependable piece to build around.
Key Specifications
- Manufacturer: Sons of Liberty Gun Works
- Manufacturer Part Number: MIDGASTUBE
- UPC: 691821279203
- Model: Mid Gas Tube
- Product Type: Gas Tube
- Gas System Length: Mid-Length
- Material: Stainless Steel
- Finish: QPQ Salt Bath Nitride
- Color: Black
- Fitment: AR-15 / AR-10 mid-length gas systems
What’s Included
- SOLGW mid-length gas tube
- Gas tube roll pin
Frequently Asked Questions
What barrel lengths work best with this SOLGW mid-length gas tube?
Mid-length gas systems are typically matched to 16-inch and longer barrels that are set up for mid-length gas ports. Running the correct gas length for your barrel keeps the rifle cycling smoothly and reduces wear on the bolt and carrier. Always match the tube length to what your barrel's gas port location calls for.
Does the SOLGW mid-length gas tube come with the roll pin?
Yes, the gas tube roll pin is included in the package. That saves you a trip to track one down separately, since it's an easy part to misplace. You'll still need the right punch and a solid surface to seat it into your gas block.
What does the QPQ finish actually do for the gas tube?
QPQ is a salt bath nitride treatment that hardens the surface of the stainless steel and adds strong corrosion resistance. It also creates a smooth, non-reflective black finish that helps reduce carbon and fouling buildup over time. On a part that lives in a high-heat environment, that added durability pays off.
Will this gas tube fit both AR-15 and AR-10 builds?
The tube is bent to standard mid-length specifications, so it fits mid-length gas systems on both AR-15 and AR-10 style platforms. As long as your barrel and gas block are set up for mid-length gas, it drops right in. Just confirm your build is using a mid-length gas port before ordering.





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