Remington Factory New 870 12ga Trigger Plate assembly. You chose from the Marine, Police Black Matte, Police Blued which is the same as the Wingmaster finish trigger plates. This Marine one is the one that comes in the Marine Police. These are the same cast aluminum Trigger plate assemblies that come standard in the respective models new Remington Shotguns. Complete assemblies so you just push out the trigger plate pins, pull your old trigger plate out and pop this one in. These all retail for $102.75 on the 2016 Remington Part list.
Understand that the model is just a name for the finish and anyone of these fits in every model 12ga 870. If confused contact me or just accept there is only one 870 and they only differ by finish, furniture and a couple small parts.