My understanding of SB92...
It effectively removes the Clark County (Las Vegas is in Clark County) requirement for gun registration for non-residents. If the bill passes into law non-residents will have 60 days to remain in the county before their gun must be registered.
This is great if the Nevada CCW Reciprocity bill passes. This will allow non-residents to carry concealed on some state's permits without needing to register their carry gun in Clark County.
If SB92 were to pass without the Nevada Reciprocity bill passing, it would eliminate the need for non-residents to register their openly carried concealable weapons. Since loaded car carry is legal in Nevada non-residents could also have a loaded, unregistered, gun in their car.
The bill only applies to Clark County because it is the only place requiring the registration of concealable firearms.