Sons of Liberty Gun Works Mid Length Gas Tube QPQ – AR-15 Direct Impingement System

The SOLGW Mid Length Gas Tube is a direct replacement for worn or damaged gas tubes in AR-15 mid-length gas systems. This component channels propellant gas from the gas block back to the bolt carrier group, cycling the action. Upgrading to a QPQ-treated gas tube ensures reliable function and extends service life, particularly for rifles with higher round counts or those exposed to harsh environments.

Manufactured from stainless steel with a salt bath nitride (QPQ) finish, this gas tube resists corrosion and heat erosion better than standard stainless tubes. The QPQ process penetrates the metal surface, providing durability that won't flake or wear off under sustained fire. Installation requires a roll pin punch and gas block removal—straightforward for anyone comfortable with basic AR-15 assembly, though a bench vise and upper receiver block simplify the job. Gas tube pin is typically included with the gas block, not the tube itself.

• Part Type: Gas Tube
• Compatible Firearms: AR-15 Mid-Length Gas System
• Material: Stainless Steel
• Finish: QPQ Salt Bath Nitride
• Installation: Drop-In (requires roll pin removal/installation)
• Includes: Gas Tube Only (roll pin not included)