If you do not have a manual, you need to visit a gunsmith.
Rings, extractor/ejector, firing pin. forearm
Impossible to answer since you don't provide the type of action (OU, SxS, Pump, Semi-Auto)
The CBC MODEL SB 410 BORE SHOTGUN is made in brazil and imported by firearms import and export Corp. located in Miami, Florida it is a break-action single shot shotgun
It is a single barrel, break-away 12 gauge shotgun.
The question is a little confusing to me, is this a 12 guage gun or is it one of the Browning reproductions of the Winchester Model 12. If the barrel is available it is usually a simple process to replace the barrel on most pump and semi-auto shotguns. If you are talking about a break open type shotgun (over & under, side by side, or single shot) that is usually a very expensive process.
Model 1901 Iver Johnson, semi-hammerless, automatic ejector single gun.
It would be a matter of opinion but I would say the Winchester Model 37.
$50 and up, depending on make, model, and condition.
You did not tell us what MAKE your shotgun is. The two 1895s that come to mind are a lever action Winchester RIFLE, and a Davenport shotgun, which had a prominent release lever right behind the hammer.
The sears model 200 is a Winchester 1200. That will make it easier to find info. I have one of these, with adjustable choke and vent rib. It is a sweet shooting and smooth little shotgun.
Around 75-100 dollars.
Yes