BENELLI M4 CANADIAN LEGAL MAGAZINE EXTENSION +1Benelli M4 Magazine Extension +1 (Canadian Legal) is designed to comply with Canadian regulations limiting semi automatic shotguns to 5 rounds of the largest shell size (3"), this extension allows you to load 6 rounds of 2 3 4" shells in the Benelli M4 while remaining compliant. CNC machined from 4140 steel, it measures 6. 5" and sits flush with an 18. 5" barrel. Finished in durable Cerakote. Uses the factory spring, no additional spring or follower
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