(Expanded) Stuck choke tube
 

I went shooting clays the other day with my Girsan MC3125 Semi-auto shotgun.

When I got back to clean my gun trying to take off my choke tube I was unable to take it off and it wouldn't budge.

I dunked my barrel in PB blaster for 48 hours and clamped my choke key to a vice and managed to expose all of the threads on the choke. The body of the choke is hung up in the barrel and I have no idea how to get it out and was wondering if there is something I can do to take it out without damaging the choke if possible.

Welcome from Florida!
two questions
1 - was it left inside the barrel without any oil or grease on it?
2 - is it the right choke for those threads in your barrel?

Not trying to sound demeaning, BUT as an example, Beretta has so many choke variations with close-sounding names that is was easy to buy and use the wrong one

All is well now I sacrificed the choke threads and used vice grips on the choke and clamped it to a vice and carefully pulled and twisted counter clockwise until it finally popped off. I tried fitting my other choke tubes after and they worked perfectly fine. Thankfully I didnt damage my barrel threads.

Thanks for the info anyways.

Glad it all worked out

Over the years I've found the perfect choke tube lube , USE a Marine grade anti seize with Nickel base NOT copper . Never worry about choke seize again .

I have sworn off choke tubes...
 

I have sworn off choke tubes. And from now on, my guns will be double barrel with two triggers and fixed chokes. And I am so happy I did this. Going back to my childhood. But I won't throw out my Winchester Model 12 guns.

I would find and fit up extra barrels fitted with Cutts compensators for those M12's and put them to work. You never stick a choke in a Cutts, if you do ever get one too tight a big combination box end wrench will remove it every time.

I don't have any problems with stuck tubes, but I do keep them clean and lubed.

Since the problem is solved, this thought might be a waste. However...since cold things shrink, and hot things expand..would blowing some freon onto the choke have helped?

Or use a heat gun/hair dryer to heat(expand) the barrel and a good penetrant.
You'll never loose a choke tube doing this.
I fear as the op did use vise grips would damage the barrel threads.