Caleb, the best way to determine fitment is to use the Configurator found on the "Choose your Gas Control" page here:
https://www.riflespeed.com/Choose-your-Gas-Control_ep_41.html
We also have a YouTube video that will help.
https://youtu.be/HlapqlbH4oo
The most common issue preventing fitment is handguard length. You can enter different measurements in the Configurator to find a length that works.
Thanks for your interest in Riflespeed.