Choate Tool Benelli Magazine extension +4 for the Super Black Eagle Matte 12 Gauge. Will add 2 rounds to the capasity of your shotgun. Comes with spring and base clamp. Specifications for Choate Tool Benelli Magazine Extension: Manufacturer: Choate Tool Gun Make: Benelli Gun Model: Benelli M2 Additional Features: for the Super Black Eagle Country of Origin: USA Features of Choate Tool Benelli Magazine Extension Magazine extension for the Benelli Super Black Eagle (SBE) SBE II M1 and M2 12 gauge shotguns Package Contents: Choate Tool Benelli Magazine Extension What firearm models does the manufacturer say Choate Tool Benelli Magazine Extension is compatible with? The manufacturer suggests that Choate Tool Benelli Magazine Extension is compatible with Benelli M2Choate Tool CMT-21-04-14: Benelli Magazine extension +4 for the Super Black Eagle Matte 12 Gauge