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Will this rail work with a piston driven AR? — 1 Answer

by Russell, from OK, United States Asked on October 9, 2022

Name Fortis Manufacturing REV II Free Float Rail System (4.8)
As Low As $118.70 Save Up to 22%
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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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Last updated 2025-11-12 UTC.