Along with e.g. bullets, I can supply tree resin (8)

I believe the answer is:

ammoniac

I'm a little stuck... Click here to teach me more about this clue!

'resin' is the definition.
(I know that ammoniac is a resin)

'along with e g bullets i can supply tree' is the wordplay.
I cannot really see how this works, but
'along' could be 'on' (synonyms) and 'on' is present in the answer.
'g' could be 'm' (synonyms) and 'm' is located in the answer.
'i' could be 'a' and 'a' is found within the answer.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Independent.

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