INOX is short for the italian word that means stainless steel, nothing fancy just a stainless slide and barrel.
one thing i don't like about the 92FS INOX are the sights, they have red dots instead of white and aren't easy to see. so i'd recommend the 92FS in bruniton or the 92FS Brigadier INOX which has better sights.
the FS models have a safety/decocker on the slide. the G models are just decockers without a safety like a sig is but they are only available to civilians in the Elite and Elite 2 guns. some old LE Berettas might be in the G safety format.
one thing i don't like about the 92FS INOX are the sights, they have red dots instead of white and aren't easy to see. so i'd recommend the 92FS in bruniton or the 92FS Brigadier INOX which has better sights.
the FS models have a safety/decocker on the slide. the G models are just decockers without a safety like a sig is but they are only available to civilians in the Elite and Elite 2 guns. some old LE Berettas might be in the G safety format.