Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart

It says the gas system is proprietary. What gas tube length do I need to order? — 2 Answers

by Joel, from KS, United States Asked on October 5, 2022

Name Rainier Arms AR UltraMatch MOD2 6mm ARC Rifle Barrel (3.8)
Currently Unavailable View Product
Continue As a Guest
Saving...
Sign In or Create an Account (optional)
Why use an OpticsPlanet.com account for my questions and answers?

Having an account with OpticsPlanet.com makes writing questions and answers even better! We’ll save all of your questions and answers in your account, provide you easy access to them, so you can see how the community has responded.

If you’d like to add a question without creating an account, you can proceed with filling out the fields on this form.

Show
Sort by
Filter by
Expert Answer
A
Answered by Ethan, Gear Expert, from IL, United States, on October 07, 2022

The Rainier Arms AR UltraMatch MOD2 6mm ARC Rifle Barrel uses a Rifle + length gas system and would require a Rifle + gas tube.

3 of 6 found the following answer helpful.
Was it helpful to you? Yes | No
A
Answered by Sora, member, from TN, United States, on October 19, 2022

Rifle + 1" length gas tube can be bought from various brands.

3 of 3 found the following answer helpful.
Was it helpful to you? Yes | No
Last updated 2025-11-12 UTC.