AR-15 Rifle Length Gas Tube

Description

OVERVIEW – AR-15 RIFLE LENGTH GAS TUBE – MIL-SPEC STAINLESS GAS SYSTEM

The AR-15 Rifle Length Gas Tube is the critical stainless steel gas tube that channels high-pressure gas from the barrel’s gas port back to the bolt carrier key, powering the direct impingement cycling of your AR-15 rifle-length system. Manufactured from premium Mil-Spec 304 stainless steel to exact rifle-length dimensions at approximately 15.125 inches, this gas tube is engineered for use with rifle-length gas systems found on 20-inch barrels and A1/A2 rifle configurations. Whether you are building a classic M16A2 clone, a National Match competition rifle, a DMR precision build, or replacing a clogged or corroded gas tube on an existing rifle, this tube delivers reliable gas flow for smooth, consistent cycling. The corrosion-resistant stainless construction resists heat, carbon buildup, and oxidation, maintaining its internal diameter through thousands of rounds without erosion or pitting that can cause short-stroking or over-gassing.

Designed for drop-in installation with all standard low-profile gas blocks and front sight bases that accept 0.750″ or other standard journal sizes, this rifle gas tube features a precision-formed bend that aligns perfectly with the upper receiver’s gas tube hole and bolt carrier key, preventing binding, leaks, or misalignment that can cause cycling failures. The gas tube roll pin hole is precisely drilled for secure retention to the gas block, and the flared end seats positively into the carrier key for an efficient gas seal without excessive leakage. Compatible with all standard AR-15 calibers using rifle-length gas, including .223 Remington, 5.56 NATO, and .308 Winchester in AR-10 rifle platforms, it works with standard rifle buffer systems, carbine buffers with rifle gas, and adjustable gas blocks for fine-tuning. Essential for any rifle-length build or as a spare part for field maintenance.

WHY YOU NEED THIS AR-15 RIFLE LENGTH GAS TUBE

The gas conduit that powers your rifle-length AR-15 cycling.

1. Mil-Spec 304 Stainless Steel With Precision Form And Corrosion Resistance:
This rifle gas tube is manufactured from genuine Mil-Spec 304 stainless steel tubing that has been precision formed, bent, and flared to exact rifle-length specifications, ensuring perfect alignment from gas block to bolt carrier key without stress, kinking, or deformation. Unlike cheap carbon steel tubes that rust, pit, and erode quickly under high-temperature gas flow, causing gas leakage, reduced bolt velocity, and eventual failure to cycle, this stainless tube withstands extreme heat and corrosive combustion gases while maintaining its precise internal diameter for consistent gas volume delivery. The stainless material resists carbon adhesion, making cleaning easier and preventing internal buildup that can restrict flow and cause short-stroking. Each tube is deburred internally and externally to prevent gas turbulence and ensure smooth installation through the gas block and front sight base. The pre-drilled roll pin hole is located to exact Mil-Spec position for secure attachment to the gas block, preventing tube rotation or walk-out under recoil. The flared end is formed to create a tight seal with the carrier key, minimizing gas loss and maximizing energy transfer to the bolt carrier group. This quality construction ensures reliable cycling in all conditions, from cold weather to high round count training sessions, preserving the soft, low-recoil impulse that rifle-length gas systems are known for.

2. True Rifle-Length Spec For 20-Inch And A1 / A2 Rifle Systems:
Engineered to true rifle-length at 15.125 inches, this gas tube is specifically designed for use with rifle-length gas ports located approximately 12 inches from the breech face, as found on standard 20-inch rifle barrels and many 18-inch SPR barrels using rifle gas. This longer gas system provides the softest recoil impulse, longest dwell time, and gentlest extraction of all AR-15 gas lengths, making it ideal for competition rifles, precision builds, and classic military clones where controllability and reduced parts wear are priorities. The extended length allows gas pressure to drop significantly before reaching the bolt carrier, resulting in slower, smoother unlocking and reduced stress on the extractor and bolt lugs, extending component life. It is fully compatible with all standard rifle-length gas blocks, including A-frame front sight bases, low-profile steel blocks, and adjustable gas blocks for tuning suppressed or unsuppressed shooting. The tube’s precise bend angle clears all standard handguards, free-float tubes, and delta ring assemblies used on rifle-length systems, ensuring no interference during installation or operation. Whether building a retro M16A1, M16A2, or modern DMR with rifle gas, this correct-length tube ensures proper gas timing, preventing issues such as failure to extract, bolt bounce, or excessive carrier speed that occur when using incorrect gas tube lengths.

3. Drop-In Installation And Essential Spare For Every Rifle Build:
Installation is straightforward for any builder – insert the gas tube through the upper receiver’s gas tube hole, through the barrel nut and handguard cap if applicable, and into the gas block journal, align the roll pin holes, and secure with the included or existing gas tube roll pin. No fitting, bending, or gunsmithing required when used with Mil-Spec components, making it perfect for first-time builders and experienced armorers alike. As a component that can become clogged with carbon, bent during handling, or corroded over time, having a spare rifle gas tube is cheap insurance that prevents build delays and range downtime – a blocked tube will completely stop your rifle from cycling. This affordable, factory-spec tube allows you to keep spares in your armorer’s kit or range bag for quick field replacement. It is also ideal for replacing tubes that show signs of gas leakage, erosion at the flare, or discoloration indicating overheating. Whether you are completing a stripped upper, converting a carbine to a rifle-length system, or performing routine maintenance on a high-round-count rifle, this rifle-length gas tube restores factory cycling performance and ensures your AR-15 runs reliably for thousands of rounds.

THE CONDUIT FOR SMOOTH RIFLE CYCLING.

SPECIFICATIONS:
Type: Rifle Length Gas Tube – Direct Impingement – Mil-Spec
Material: 304 Stainless Steel – Corrosion Resistant – Precision Bent – Pre-Drilled Roll Pin Hole – Flared End
Compatibility: Rifle-Length Gas System – 20″ Barrels – 15.125″ Length – All Standard Gas Blocks – .223 / 5.56 – Drop-In
Function: Channels Gas From Barrel To Bolt Carrier – Powers Cycling – Ensures Reliable Feeding And Extraction