It is possible.
none offered
You need to contact Ruger. You may have a prototype
Ruger has extensive sn data on their website.
You can request a manual from Ruger on their web site.
The link at the bottom of this page will take you to the Ruger website for your pistol. You can download the owner's manual for your pistol, which includes instructions on assembly and maintenance.
Ruger's website has sn data.
You can get a manual for free at Ruger's web site.
Request a manual from Ruger on their web site.
Ruger's web site has sn data.
Request a manual from Ruger's website or take it to a gunsmith
Which one?