2a Bldr Series Ss Gas Tube Mid

The 2A Armament Builder Series Stainless Steel Gas Tube Mid is a precision-engineered component designed for AR-platform rifles requiring exact port timing and proven reliability. As a mid-length gas tube, this component interfaces with the gas block and bolt carrier group to regulate propellant gas flow—a critical function that directly impacts cycling reliability, recoil impulse management, and component longevity.

Manufactured from stainless steel, this gas tube resists corrosion from extended field use, salt environments, and rapid cleaning cycles. The mid-length profile (as opposed to carbine or rifle-length variants) delivers a gas port timing sweet spot for rifles chambered in common military calibers, producing a smoother recoil curve than shorter tubes while maintaining reliability with modern ammunition. Precise boring and finish work ensure zero port restriction and dependable gas expansion inside the tube itself. Weighing just 0.06 lbs, the tube introduces negligible mass while meeting exacting dimensional tolerances that 2A Armament is recognized for across the builder community.

This component is essential for AR builders and gunsmiths assembling complete upper receivers or replacement gas systems. Operators upgrading to mid-length platforms—particularly those building patrol rifles, precision trainers, or duty-grade uppers—rely on gas tube selection to dial in function. The stainless construction suits shooters who operate in harsh climates or log high round counts without frequent teardown. Whether you're troubleshooting a reliability issue or building from stripped parts, this 2A Builder Series tube delivers the dimensional accuracy and material quality expected in professional-grade rifle manufacturing.