Foxtail Precision Red Dot Adapter Plate for Mossberg 500/535/590/865 Shockwave Shotguns fits Holosun 407k, 507k, RMSc

From MidwayUSA

Enhance your pistol's versatility with the Foxtail Precision Red Dot Adapter Plate. This adapter plate transitions the mounting system on your optics ready pistol, so it's compatible with your favorite optic. With the addition of a Foxtail Precision Adapter Plate, you no longer need to worry about optic compatibility when choosing your new pistol or red dot. FeaturesDurable 7071 Aluminum CNC ConstructionMounting Hardware Included Note: Pistol Must Already have a Slide Cut for Optics