Southern Gun AR15 9mm Hammer/Boltcarrier questions?

[FritztheMoose]

just out of curiosity

how is the boltcarrier ramped? Do you need the 9mm hammer if you shoot it out of the box or not? Meaning could you put the upper on a 223 lower without switching hammer or modifieng the boltcarrier?

[Rburro2]

Ther lower has all the lever release mechanism in it and i believe the upper wont fit on a standard lower, i asume this has been done intentially as if you could swap the lower i ashume it would run as semi auto and then be section five. interesting question though

[toffe wrapper]

The LRR is not interchangable with std 223 uppers or lowers as far as I know.
The LR parts in the lower are unique not sure about trigger or hammer.

TW