Jaywalker said:
My concern about these specific parts may be unfounded, but a review of some long-term tests (in excess of 50k rounds) leads me to the conclusion that parts can break and aftermarket parts break more frequently. All of my carry pieces have factory-only parts and recently I've begun carrying a BUG as parts seldom give warning when they go.
Fine. We now understand your motives and reasoning.
You've seen long-term tests of aftermarket parts? If not, why do you feel those parts fail more frequently?
For that matter, do you have a SINGLE WEAPON through which you've fired 50,000 (or even 20,000) rounds? Do you have a weapon that you fell confident enough to carry, that has had a failure of any sort? Most major brands of guns are pretty reliable -- and the ones that aren't have reputations that precede them.
In my years of shooting, I've had one Glock trigger return spring break; all of my other gun failures became obvious IMMEDIATELY upon a range session, or were slow to develop -- like springs slowly giving up the ghost, affecting feeding or extraction, etc. That's why most people recommend that you shoot your carry gun regularly -- to notice small problems before they become major problems. Catastrophic failures are pretty rare. In fact, it's just as likely that a mag or round will fail as the gun will fail -- do you carry a spare mag?
Being prepared is good practice and a good mindset, but if your selection standards are too stringent, you run the risk of NEVER finding a weapon that meets your high personal standards.
A BUG doesn't hurt, of course. But I know guys who carry multiple weapons and knives, etc. I suspect that if you were to look up "obsessive" in the dictionary, you'd see one of their pictures. Don't be like them.