Gun I have to pack for the trip (6)
I believe the answer is:
outing
'trip' is the definition.
(I've seen this before)
'gun i have to pack for the' is the wordplay.
I cannot really see how this works, but
'i' is within the answer.
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is present in the answer.
an anagram of 'gun' is 'ung' which is present in the left over letters.
A single letter 'o' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for outing that I've seen before include "Day excursion" , "Short pleasure trip" , "Jaunt" , "A trip in the open air" , "Excursion, trip" .)