This extension allows you to increase the ammunition capacity of the shotgun to 10 rounds. The extension is made of tough 6061 aluminum. This allows the tube to have a large wall thickness to improve rigidity without compromising overall weight. The tube screws down on the magazine and locks the fore end in place. The extension is supplied with a follower and spring.

For Benelli M1 & M2 Super 90, Super Black Eagle, & SBE II Only

Total length measures 13 1/2 inches. For 12 gauge only