I installed sjhardware.com Remington 870 type 2 delrin followers. $22 delivered from Canada. The type 2 followers are for extended mag tubes. I used the smt tactical mag plug removal tool which made it super easy. The oem followers had to be knocked out with a cleaning rod. I cleaned the tubes with a boresnake and sprayed them with some crc dry moly lube. I also cleaned and lubed the springs with the dry moly spray too.