It has a high degree of parts interchangeability with a 1911, but still has some differences.
Here is a picture from the internets.
Here is a list of interchangeable parts
Barrel Bushing
Front & Rear Sight
Hammer
Trigger
Grip Safety
Main Spring Housing
Thumb Safety
Sear
Disconnector
Sear Spring
Grip Panels (but not the screws because they're in metric)
Mag Release
Sear Pin
Hammer Pin
Plunger Tube
Plunger Spring
I have never run a 1911 with a FLGR before. My experience with this gun makes me a little wary of them.