Okay so I acquired an old Remington shotgun that was my grandfathers that my dad gave me for my 30th birthday. He does not know much about it and I cant find any info about it really. It loads and ejects from the bottom, says "Remington Trap Grade" on the pump arm. There is an R.P. stamp on the right side of barrel, and a B stamp on the left. Any help is greatly appreciated!