You can request a owner's manual for free at the S&W web site.
Ask a gunsmith for help.
Go to Smith and Wesson's website. You can request a manual or download it for free
You can request or download a manual from the S&W website. I recommend finding a good gunsmith and asking for help.
Follow instructions in the owner's manual. If you don't have one, you can get one for free at Smith and Wesson's website.
Recommend you ask a gunsmith for assistance.
Best to ask a gunsmith for help.
Find a good gun smith.
Sometime in the 1960's. You will have to call S&W to narrow it down.
You can get an owner's manual at the S&W website.
You can get a manual for free from S&W on their website.
You can request a owner's manual for free at the S&W website.
You can request a manual for free at S&W's web site.