is there any place that i can purchase titanium parts from? Triggers, hammers, safety levers, etc??? THanks!

STI in TX makes titanium hammers, struts, mainspring caps, and a trigger that has a titanium bow with a polymer pad.  I've never seen nor heard of a titanium safety, which would be of absolutely no benefit except being more expensive.  

Caspian makes a titanium beavertail grip safety.  They also make a titanium mainspring housing.  I can't really think of any other titanium parts out there.  Also, with titanium hammers, trigger jobs go dull much quicker, in my opinion.