WILSON COMBAT GAS TUBE AR-15 SS 15.1″

Description

When a gas tube wears out or a build calls for a fresh start, the replacement part matters more than it might seem. The gas tube is the conduit that bleeds propellant gas from the barrel port back to the bolt carrier group, and the length of that tube determines how much dwell time the bullet spends past the port before pressure arrives at the bolt. A rifle-length system like this one draws gas from a port farther down the barrel, which means pressure builds more gradually and arrives at the carrier later in the cycle. The practical result is a softer, more spread-out recoil impulse compared to shorter gas system lengths running the same ammunition — a real consideration when selecting components for a precision or high-volume build.

Wilson Combat sources this tube from a government contract supplier and holds it to military specifications, which means the dimensions, port alignment, and material grade conform to the same standards used in service rifles. The tube is stainless steel, which resists the corrosive byproducts of combustion better than a coated carbon steel tube would over time, particularly for shooters who run suppressed or go extended periods between cleanings. At 15.125 inches overall, it is dimensioned for standard rifle-length gas systems on AR-15 and AR-10 pattern upper receivers. No roll pin is included, so have one on hand before the build goes together. This is a tube-only replacement — the gas block is sold separately.