This Two Shot Vertical Extension Tube fits 12 gauge Remington M870, 1100, and 1187 to increase magazine capacity to 6 rounds. It has an extra-power magazine spring for improved reliability and a high-visibility follower for visual reference of the empty magazine tube. This mag extension also has a sling mount for vertical attachment and mounts on the bottom.
|Model Fit||Rem 870/1100/11-87|
|Product Model||Extension Tube|