Extension cap for returning shotgun to factory capacity.

• Attaches to MXT extension nut
• Facilitates attaching a sling to the magazine cap
• Includes QD swivel cup (swivel not included)
• May result in 1 capacity gain over factory configuration depending on shotgun model

NOTE: May require fabrication of a new magazine plug or modification of an existing magazine plug to restrict magazine to comply with Federal law regarding 2-round magazine capacity limit for hunting migratory waterfowl