Impossible to answer without a detailed description of all features and markings.
I paid $259 for one in February of 1994 with a 6" barrel. Not sure if they still make that model
100-300 USD or so
The Smith & Wesson M&P 15-22 rifle sells new for about $400.
No
0-1000 USD depending on EXACTLY what you have and its condition.
Your Smith and Wesson model 686-5 will range in price from 400-600 dollars,depending on overall condition and a good bore.
No.
You will have to call S&W to find out.
Try e-gunparts.com
I would start my search at Smith and Wesson first.
100-400 USD
.32revolar smith wesson price in India