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Q&A for Fortis Manufacturing REV II Free Float Rail System — 7 Questions & 8 Answers

Name Fortis Manufacturing REV II Free Float Rail System (4.8)
As Low As $118.70 Save Up to 22%
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Q
Hamz, guest, from TN, United States, asked on March 25, 2018

Is there a recomended gasblock for this rail?

Expert Answer
A
Answered by Jonathan D., Gear Expert, from IL, United States, on June 01, 2018

Any low profile gas block that will accommodate the 1.340" insdide diameter of the handguard will be fine as long as it matches the gas seat diameter of your barrel. It your gas seat is .750" diameter the following Fortis model should work:

https://www.opticsplanet.com/fortis-manufacturing-fortis-low-profile-gas-block.html

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Q
Corey, member, from MO, United States, asked on February 25, 2018

What is overall length of 7” handguard? I see two measurements 7” and 7.3” thanks

Expert Answer
A
Answered by Ethan C., Gear Expert, from IL, United States, on April 20, 2018

They are actually 7.3" long overall.

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Q
Russell, guest, from OK, United States, asked on October 09, 2022

Will this rail work with a piston driven AR?

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A
Answered by Ethan, Gear Expert, from IL, United States, on October 17, 2022

The Fortis Manufacturing REV II Free Float Rail System has an internal diameter of 1.340" and would not be compatible with piston gas blocks.

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Q
Sean, guest, from MN, United States, asked on April 18, 2022

Product details state the rail is lightweight, but do not list the weight. What is the overall weight including the barrel nut? TYIA

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on April 28, 2022

The Fortis Manufacturing REV II Free Float Rail System handguards will vary in weight depending on what length model you are asking about. The weight of each model is listed next to the model on the product page. These Fortis Manufacturing REV II Free Float Rail System handguards do not come with a barrel nut, so the overall weight of the handguard and barrel nut will vary depending on what barrel nut you use.

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Q
Layne, member, from TX, United States, asked on December 25, 2020

I have the Yankee Hill Black Diamond Specter complete upper. I think the bore diameter for the gas block is .750". Will this handguard work?

Expert Answer
A
Answered by Bethany Kopel, Gear Expert, from UT, United States, on December 28, 2020

Yes, that will work.

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Q
JasonS, member, from NJ, United States, asked on October 27, 2020

Do you sell the 13.8" version (https://fortismfg.com/rails/rev%20II/ar15-fortis-REV-2-free-float-rail-system-14-MLOK)?

Expert Answer
A
Answered by Bethany Kopel, Gear Expert, from UT, United States, on December 28, 2020

Unfortunately, we do not stock the 13.8".

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Q
Pete, member, from ID, United States, asked on November 08, 2024

Would a superlative gas block fit, screw in NOT clamp on.

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Last updated 2025-11-12 UTC.