Wilson Combat Remington 870 1-Shot Extension Right Hand Sling Mount Fits Remington 12 Gauge 870/1100/1187 Black SGET-RH-1

One Shot Tactical Magazine Extension Tube with Right Hand Side Sling Mount” 12 Gauge. Scattergun Technologies magazine tube extensions are so tough they were selected for use by the U.S. Secret Service and the U.S. Border Patrol.