Beretta has manufactured barrels with several different thread/choke styles over the years. Some guidelines to help you determine which type of choke tubes are right for your gun are as follows:
MÜLLER FEATHERLITE* COMPETITION CHOKE TUBES ARE THE LIGHTEST, HARDEST, CLEANEST, MOST CONSISTENT PATTERNING CHOKES IN THE WORLD.
MÜLLER STAINLESS STEEL/CERAMIC CHOKE TUBES ARE THE HARDEST STAINLESS STEEL CHOKE TUBES ON THE MARKET, THANKS TO THE H900 AEROSPACE HARDENING PROCESS...
WHEN JIMMY MULLER SET OUT TO DEVELOP HIS LINE OF WATERFOWL CHOKES, HE HAD ONE GOAL IN MIND: TO DEVELOP ONE STYLE CHOKE TUBE TO OUTPERFORM EVERY CHOKE TUBE ON THE MARKET REGARDLESS OF THE HUNTER’S CHOICE OF AMMO. AND, HE DID IT.
ALL MÜLLER CHOKES COME WITH A 60-DAY MONEY BACK GUARANTEE TO PROVE IT.
Please note that Muller Chokes is NOT responsible to know what choke type your barrel takes. It is important, if you have purchased a used gun, for you to know whether or not any after-market adjustments have been made to your gun. If you have questions, an experienced gunsmith can advise you.