I'd like to see more pictures of it open and cylinder also end to end. Also is it a screw in barrel?
Looks as if it was a repair to a BLEM pistol and sold as NEW. Maybe to change cylinder and barrel to shoot different caliber?
Country of MFG is apparent for that type repair. Waste nothing.
Interestingly, that gun looks like the same color as my Taurus 605SH2 which is a titanium 16-ounce .357. They stopped production on this model some time ago. Needless to say, it's a bit of a recoiling "beast" with full .357 magnum loads but not bad with 38 SPL +P's.