Briley Modular Shotgun Magazine Extension with Barrel Clamp (+4 or +6 Rounds) 12 Gauge (Franchi Affinity, Intenstity, I-12 )

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Price: $134.95
This extension allows you to increase the ammunition capacity of the shotgun. 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 magazine tube spring

Fits:  
Franchi Affinity, Intensity and I-12