Collected gun, the lady's limited edition (8)
I believe the answer is:
gathered
'collected' is the definition.
('gather' can be a synonym of 'collect')
'gun the lady's limited edition' is the wordplay.
'gun' becomes 'gat' (gat is a kind of gun).
'the lady's' becomes 'hers'.
'limited' means to remove the last letter.
'edition' becomes 'ed'.
'hers' with its last letter removed is 'her'.
'gat'+'her'+'ed'='GATHERED'
(Other definitions for gathered that I've seen before include "Got together - tucked in" , "assumed" , "Picked up" , "Accumulated, brought together" , "Collected in one place and concluded" .)