The Luth-AR Rifle-Length Gas Tube (brand part number BL-04) is a stainless steel replacement gas tube sized for rifle-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, cycling the action on every shot, so a bent or cracked tube is a common cause of a rifle that will not run. Luth-AR builds this tube from stainless steel for corrosion resistance under the heat and carbon exposure gas tubes see over the life of a rifle. At approximately 15 3/16 inches, it is sized specifically for rifle-length gas systems, not carbine or mid-length setups, so builders should confirm gas system length before ordering.

Key Specifications

• Built from stainless steel for corrosion resistance.
• Sized for rifle-length gas systems on the AR-15 platform.
• Overall length is approximately 15 3/16 inches.
• Classified as a gas tube, a direct replacement part.

Frequently Asked Questions

What gas system length is this tube for? Rifle-length gas systems specifically; it will not fit a carbine or mid-length gas 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 short-stroking or a rifle that fails to cycle.

Buy the Luth-AR Rifle-Length Gas Tube

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