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Black Dog Models has released no less than five resin free fall Atomic bombs in 1/72 scale

Not sure all of these are Atomic bombs. I think the Mark 17 was a hydrogen bomb.

The resin 1/72 scale Atomic bombs include:
A72034 - Atom bomb Mark 17
A72035 - Atom bomb Mk-53B-53
A72036 - Atom bomb Mark 39
A72037 - Atom bomb Mark 41B-41
A72038 - Atom bomb Mark 36

Please remember, when contacting retailers or manufacturers, to mention that you saw their products highlighted here – on AEROSCALE