The Luth-AR Pistol Gas Tube (brand part number BL-04B) is a stainless steel replacement gas tube sized for pistol-length gas systems on the AR-15 platform. This tube carries propellant gas from the barrel’s gas port back to the bolt carrier group to cycle the action, and a bent, cracked, or heavily carboned tube is a common cause of an AR pistol that will not run reliably. Luth-AR machines this tube from stainless steel for corrosion resistance under the intense heat and carbon exposure a pistol-length gas system sees. Builders assembling a short-barreled AR pistol, or replacing a damaged factory tube, will find this a direct, purpose-sized fit.

Key Specifications

• Built from stainless steel for corrosion resistance.
• Sized specifically for pistol-length gas systems on the AR-15 platform.
• Classified as a gas tube, a direct replacement part.

Frequently Asked Questions

What gas system length is this tube for? Pistol-length gas systems specifically; it will not fit a carbine, mid-length, or rifle-length system.

What material is this gas tube made from? Stainless steel, for corrosion resistance under repeated heat and carbon exposure.

What are signs a gas tube needs replacing? A bent, cracked, or heavily carboned gas tube is a common cause of a short-stroking or non-cycling AR pistol.

Buy the Luth-AR Pistol-Length Gas Tube

Order the Luth-AR pistol-length gas tube from our Lubbock, Texas gun shop for fast, insured shipping. See more Luth-AR AR gas system parts for your build.