Hi David. The following is from the 11-48 owner's manual in a section about changing barrels, "be careful not to lose the friction piece (none in .410 Gauge) that is retained within the barrel guide ring."
Remington's website has a support section where you can request an owner's manual. They don't have a download for the 11-48 but they'll send you one if you ask.
http://remington.custhelp.com/cgi-bin/r ... r/home.php
Remington's website has a support section where you can request an owner's manual. They don't have a download for the 11-48 but they'll send you one if you ask.
http://remington.custhelp.com/cgi-bin/r ... r/home.php