The NcSTAR Picatinny/Weaver Receiver Rail Mount allows you to mount optics such as dot sights and other accessories like lights and lasers on your Mossberg 500/590 shotgun. This model of the rail introduces a rear plate at the end of the rail that allows the direct mounting of many NcSTAR micro dot/reflex sights, without the need for a rail mount assembly, to ensure a solid connection.
It attaches directly to stock receivers with factory pre-drilled holes, so no gunsmithing or permanent modifications need to be made. This rail is designed with a low profile to reduce snag hazards and is machined with a channel down its centerline so that you can still use your iron sights. It is made of a lightweight and durable aluminum alloy and treated with a scratch-resistant black anodized finish.