I believe the nuclear is mostly pertaining to the handles and colors that you'd get with it.
Per Jerry:
The Nuclear option on the FMV10 is a grab bag of sorts. You will receive a randomly selected handle from a pile of Nuclear Castoffs.
This pile of handles has many hand-laminated G10 and Micarta slabs, as well as some solid colors not normally offered!
This option does not allow you to choose your handle!!!! . . . You do not get A CHOICE! You will get whatever you get by the blind luck of the draw! It is a veritable PORKpourri of oddball handle materials! The Nuclear Option will also include the Busse Custom Shop logo.
Nobody likes whine with their bacon, so we have implemented a "No returns/No whine clause"!
There are no returns on the Nuclear Option. .
The two handle slabs is 2 different options between standard and magnum.
Per Jerry:
Customers ordering models that come with the option on handle thickness will be offered the choice between standard (thinner handles) or Magnum (thicker handles).
Standard or Magnum handles will cost the same.
Our regular upcharges for different materials such as black G-10, multicolored G-10, and Nuclear option handles will remain the same for both "Standard" and 'Magnum' thickness handles.
Moving forward, handles that are referred to as "Magnum" handles will be the handles that have been offered over the past few years.
For example, if you ordered an Anorexic Fusion Battle Mistress, the handles slabs that came on it would now be referred to as "Magnum" handles, and there will be a thinner option referred to as "Standard" handles.