cmasc0984

I am wanting to put a picatinny rail on my supernova shotgun. When I disassemble my shotgun to reveal the pins that hold the top strap on, as I have seen done in many YouTube videos. Instead I find the ejection plate obscures the pins and there does not seem to be any way to remove the ejection plate. Do I have some different kind of model a supernova that does not allow me to remove the pins that hold the top strap on?