Is there any known current factory or surplus importer of these? I'm completely unfamiliar on them...You might ask over on Gun Talk board here... or even the service pistol page... both get way more traffic than this board does....I'd never heard of an alloy of aluminum & titanium... don't know if it is even possible... but even Colt & Smith & Wesson had problems with aluminum receivers in handguns... both revolvers & semi-autos...good luck to you... back 30-50 years ago we loved the good European surplus guns too...long arms & side arms both.