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Is this all I need to convert my Ruger AR pistol to 9mm? — 1 Answer

by Northpole, from FL, United States Asked on May 19, 2022

Name FM Products FM-9 AR 9x19mm Parabellum Rear Charging Upper Receiver, 5 inch w/ Blast Diffuser (3.5)
$349.00 $329.00 Save $20.00
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Answered by Hunter, Gear Expert, from OH, United States, on June 06, 2022

Yes, the FM Products FM-9 AR 9x19mm Parabellum Rear Charging Upper Receiver can be used with the Ruger AR Pistol lower. You may need a different trigger that can be used with 9mm. You will also need a magwell adapter. Please email us at techsales@opticsplanet.com so we can help you find what you need.

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Last updated 2025-11-12 UTC.