It may very well be a Sauer single action, but as a rule Sauer six-guns were sold under the Marshall designation (Texas Marshall , Deputy Marshall, Chief Marshall, Silver City Marshall, etc;ect). The name Liberty was used by Schmidt ( Herbert Schmidt), who also made copies of the Colt. Both firms made large numbers of these for export to cash in on the TV western craze. At one time there were over 30 diffrent westerns on the boob tube ( same season). Colt had stoped making the single action and a number of companys ( ruger inclued ) jumped in to fill the vacuum. Italy, Spain, and Japan also made Colt copies, some better than others. They all could be ordered from the Military Rod and gun Club at a very good discount. As Jim stated, the only thing Colt was the looks. Note, these were copys, not clones, Colt parts will not interchange and parts for these guns are getting rare, even grips. Gun Parts Corp. has some parts .