Explosive nitrates in model choo-choo? (5,3)

I believe the answer is:

train set

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'model choo-choo?' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'explosive nitrates' is the wordplay.
'explosive' indicates an anagram.
'nitrates' with letters rearranged gives 'TRAIN-SET'.

'in' is the link.

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(Other definitions for train set that I've seen before include "Toy with rail track" , "Strange treats in store for this model toy" , "Toy railway" , "Nitrates (anag) - Hornby product?" , "Layout with engines" .)

I've seen this clue in The Sun.

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