The original Remington 870 shotgun was designed in a way that allowed the shotshell to get jammed between the carrier and the bolt. If you tried to remove the shell, it would be a rather difficult process. If you ask anyone who used Remington 870 shotguns before the 1980s, they’ll tell you that it required a user to disassemble the shotgun. Don’t do what a lot of gun owners do and just slam your shotgun onto a hard surface because that will damage the action bars.