Carlson's 12GA 7rd Shotgun Magazine Tube Extension, Benelli M4

Inter-Store Transfer
If this item is out of stock at your local RifleGear but available at our other location, no problem. Just place your order and select In-Store Pickup as the shipping method. As long as the item is legal in your location, we will transfer the item for you. You will be notified by email once your item has arrived at the destination.

Carlson's Magazine Tube Extensions add additional capacity to your shotgun. These tubes are made from blued solid steel and include a spring, clamp with swivel stud and a high visibility follower(some extensions will require factory follower).

The threaded tube replaces your factory magazine cap and adds extra capacity. The magazine extension is ideal for home defense, competition and law enforcement.

***Magazine round count is for the total capacity using 2 3/4-inch shells including 1 in the chamber, When using 3" shells you lose 1 shell capacity. When using 3 1/2" shells you lose 2 shell capacity.**
Example: 8 shot extension= is 7 (2.75" shells) in the extension and 1 in the chamber, 6 (3" shells) in the extension and 1 in the chamber, or 5 (3 1/2" shells) in the extension and one in the chamber.