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No this is designed to work with a mossberg Shockwave. There isn't a "Racker" version available for an RIA that i could find. But there is a universal thatd work like this one, mounts the barrel and the magtube, and will fit most 12 and 20ga shotguns. https://www.amazon.com/Elzetta-Tactical-Shotgun-Flashlight-Mount/dp/B004R5V47C

Joel, unfortunately no Sir. This Replaces Standard Mossberg Shockwave Forend and fits 590/500 -7.75" Slide Action and 6.75" Slide action. Cheers and stay safe!