Jimmy-

If it were just to come down to surface finish and color, you could get a titanium gun frame, barrel, or any other part to 'appear' just as browned, blacked, or blued steel. You could even do 'fake damascus' pattern! Using the right electrochemical process, you can get almost any color on titanium you desire. It's pretty cool in that regard.
It's possible to get the same surface textures, including the engraving. It just takes process specific to the material.


--Tinker