Requires a gunsmith to look at it.
No way to answer without knowing barrel length and gauge.
If it has choke tubes, yes. If it is fixed choke, no. I called Browning about mine and that was the answer they gave me.
It hasn't happend yet. You can custom order one to this day.
Need to know all the markings/words on the barrels and receiver. What gauge? Fixed or removeable choke tubes? Barrel length?
Depends on how far back the split goes. If it is only split 2"-3" from the muzzle, it can be cut and recrowned. If it is split back futher, the gun will have to be rebarrelled.
They made and make them still. They are valued anywhere from $500 to 10,000 possibly more, many variations in grade, condition, fixed barrel or choke tubes...etc
That depends entirely on what gun you are trying to clean. Some rifle, pistol, and shotgun barrels come off for cleaning and some are fixed to the receiver and must be cleaned in place. Get disassembly instructions for the gun.
I paid $260 recently for a 1980 Police- regular hardwood police stock/fore end, 20" barrel with rifle sights and I/C fixed choke.
No, it's a 2nd class lever.
Without a detailed description of all markings, features, box, papers, accessories, etc.. you can be in the <100 USD to >10000 USD range.
KBI is the importer. Is the Baikal an over&under or a side-by-side? Screw-in chokes or fixed? Extractors or ejectors? Chrome lined bores? Any engraving or inlaying?
The question can have two meanings...if you are asking if the shotgun has a modified choke, usually it will say on the barrel if the choke is fixed (full, "imp cyl" for improved cylinder, "mod" for modified). If your barrel has interchangeable chokes, you just need to unscrew the choke tube and read what it says. If you are asking if it was modified from the factory configuration, modifications that aren't blatantly obvious (sawed off barrel or stock, magazine tube extension, shell holders, combat sights, aftermarket stocks, etc.), may be hard to tell, like a trigger job. For gross changes, have a factory picture and compare. Subtle modifications may be hard to tell.