Carlson's Magazine Tube Extension Benelli Nova, Super Nova, Beretta Extrema I, II, CZ 712, 912 7-Round Parkerized
"Carlson's Magazine Extensions extend the capacity of the 12 gauge Benelli Nova, Super Nova or Beretta Extrema with no permanent modification. The Carlson's Extension expands the capacity of the shotgun to 7 shells of 2-3/4"" length. The extra capacity..."
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