Beretta 12Ga Extended Full MobilChoke New Factory • Beretta MDS Marked • Steel Shot OK • All Beretta Mobil Chokes Fit Most 1987 & Up Beretta, All Benelli Silver Tube Models (NO Blue Tube) & All Franchi Except Sporting SL.  All Benelli Silver Tube Models (NO Blue Tube) & All Franchi Except Sporting SL. 
Benelli Models Include:  M1, M3, M4, Black Eagle I, Legacy, Montifeltro, Nova and Super Nova