I can see much more utility from an improved extractor than a titanium firing pin. The extractor needs to hold the bullet firmly until it strikes the ejector, otherwise a malfunction could happen during the bolt’s forward travel. I’ve never cared for the titanium firing pins in any of the guns I’ve owned so I never used them. What would worry me the most is someone dry firing the rifle and the (hard sharp) firing pin hitting the edge of the chamber – that could cause some damage. I’d also be leery of the loss of inertia from a heavier pin and the lockwork time saved is moot as far as I’m concerned in one of these applications.