The third engineering change of the 686
Smith and Wesson made the model 686-3 from 1988-1992.
All Smith and Wesson model 686 revolvers were made as double action handguns by Smith and Wesson.
No sn provided
$100.00
Your smith and Wesson model 686 is valued at 250-425 dollars depending on condition.
The 686-3 was introduced in 1992 from the 686 which was made in 1988.
Unsure of what you mean by a gas ring- that usually describes a ring used in a gas operated automatic firearm- and the 686 is a revolver. Can you repost expanding on your question?- or contact me directly though my message board.
The Smith and Wesson 357 model 686-4 is valued somewhere between $450.00 to $625.00, depending on the condition.
No engineering changes.
50-550 usd
686's are bringing $350-$400.