Yhm Rifle Length Gas Tube Blk

The Yankee Hill Machine Co Rifle Length Gas Tube in Black (YHM-BL-04) is a direct impingement component designed for rifle-length gas systems on AR-platform builds. This gas tube channels propellant gases from the barrel to the bolt carrier group, making it essential for reliable cycling on rifles configured with rifle-length gas port spacing—typically found on rifles with barrels 16 inches and longer.

Measuring 18 inches in overall length and weighing just 0.13 lbs, this tube integrates a roll pin for secure attachment to the carrier group. The black finish provides corrosion resistance and consistent aesthetics across tactical builds. Gas tube length is a critical specification—rifle-length tubes are longer than carbine or mid-length alternatives, positioning the point where gas enters the system further back toward the receiver. This geometry affects gas pressure timing and dwell time, influencing bolt carrier velocity and cyclic rate. Proper tube selection ensures balanced recoil impulse and reliable operation across a range of ammunition types and suppressor configurations.

This component is essential for builders and gunsmiths assembling or servicing rifle-length AR systems, whether for precision rifle builds, designated marksman configurations, or general-purpose duty rifles. Replacement gas tubes are necessary when upgrading barrel lengths, changing gas system geometry, or performing maintenance on gas impingement systems. The Yankee Hill Machine Co offering provides a straightforward OEM-compatible solution for establishing proper gas pressure balance in rifle-length platforms.

Gas tube selection should match your barrel length and intended gas port location to avoid short-stroking or over-gassing—both of which degrade reliability and increase wear. Rifle-length gas systems are commonly associated with longer barrels and longer sight radii, favoring accuracy-focused builds and configurations requiring extended effective range.