Good golly, stop worrying about the external extractor. I have a 5" XO and a. Fastback. Both flawless function with a wide variety of ball, hp and swc ammo.
Non standard internals? OMG. I put Wilson bullet proof gi guide rod and standard weight wolf springs and guess what, they fit and work just like a colt. And to boot, they work perfect with cheap gi 7 round mags.
The purists will tell you there is only one real 1911 anyway. So any thing else is just a copy. If you buy a 1911 style pistol and it has a beaver tail grip safety, Novak sights front serations, checkering and an ambi safety it's not a 1911 any way. Might as well get one with a huge reliable external safet and just get with modern times.
And certainly don't buy one with an alloy frame. It will fall apart too.
