White Oak Armament Gas Tube Extended Length +3'' (18.160'') Stainless Steel

The White Oak Armament Gas Tube Extended Length +3'' is a precision stainless steel gas system component designed for custom AR-15 builds with longer barrels and high-performance requirements. This extended gas tube measures 18.160'' — three inches longer than a standard rifle-length system — and allows builders to fine-tune the relationship between barrel length, case capacity, and gas dwell time. Extending the gas system on long-barreled AR rifles can improve reliability, enhance brass longevity, and potentially sharpen accuracy when matched correctly to your specific setup.

Stainless steel construction ensures durability and corrosion resistance across diverse shooting conditions, from range work to field use. This is purpose-built for shooters who've moved beyond off-the-shelf AR configurations and are optimizing their rifle's gas dynamics for competition, hunting, or precision shooting. Whether you're building a dedicated long-range platform or refining a custom tactical rifle, the right gas tube length is critical to reliable, consistent performance.

Sizing a gas system isn't guesswork: working with a competent gunsmith to match your barrel length, load data, and intended use to the correct gas tube length will yield the best results. White Oak Armament's extended options give serious builders the flexibility to dial in their platform. The +3'' extension is the longest in their lineup, ideal for shooters running significantly longer barrels who need that extra system length to optimize cycling and reduce wear on components.

Specifications

Frequently Asked Questions

What's the difference between rifle length and this +3'' extended gas tube?

Standard rifle-length gas tubes are 15.160''. This White Oak Armament +3'' tube extends to 18.160'', adding three inches of system length. The longer tube alters gas dwell time, which can benefit long-barreled builds by improving reliability, extending brass life, and potentially increasing accuracy when sized correctly for your specific barrel and load combination.

Do I need a gunsmith to install this?

White Oak Armament recommends consulting with a competent gunsmith to determine the optimal gas system length for your particular build. Gas tube sizing depends on your barrel length, case capacity, ammunition, and intended use — professional guidance ensures you get the performance gains you're after.

What's it made of?

This gas tube is constructed from stainless steel, offering excellent corrosion resistance and durability across range sessions and field conditions.

What AR-15 builds is this designed for?

The +3'' extension is intended for custom, long-barreled high-performance AR-15 rifles where standard rifle-length gas systems may not optimize dwell time and cycling. It's suited for precision builds, competition rigs, and custom hunting platforms where tuning gas system length yields measurable improvements in reliability and accuracy.