You are going to need a new locking block.
That is normal when buying a used Beretta barrel and putting it on a different receiver.
What I see is $245.

 

They serviced my wife's Zoli which they consider a "Premium" gun including new locking block, it was pricey but did not hit a grand.

 

It is my understanding that Beretta O/U barrels rarely, if ever, fit correctly unless properly fitted to the receiver by a qualified gunsmith. Without fitting there may be accelerated wear. Used barrels may not always be fittable to a particular receiver.

Call Cole's and talk with them, they are the Beretta repair shop of choice and should be able to give you the information you want.

 

I have used Cole’s to fit a new barrel on my 687. Give them a call you will have all the pricing you need before you get off the phone. They are great people to work with. No surprises & the turn around time was just what they estimated it to be. Since then, I have used them for other jobs and always had a good experience.

 

Have a couple questions for anyone who has used Cole’s for gun work
I have a 687 that I bought the stock n action from a friend then bought a set of barrels and they locked up with no fitting being done. Been shooting for a couple years the lever is now straight. Looking at the gunsmith price list looks like I could wind up with possibly over a 1000 or am I possibly over pricing the cost to get gun serviced.
thanks
tim

Why would you not call them directly and ask? They are great to work with and will answer all your questions.

 

I plan on that Thursday

 

I've only use Coles in Maine twice, gunsmith was trained by Rich, has worked on Beretta's for 20+ years. He does outstanding work, he's my go to for my Beretta work. He rebuilt my 682 after 100,000 rounds and still going strong. Coles is pricy but worth every penny.