Gun I fire, shattering small statue (8)
I believe the answer is:
figurine
'small statue' is the definition.
(I've seen this in another clue)
'gun i fire shattering' is the wordplay.
'shattering' indicates anagramming the letters.
'gun'+'i'+'fire'='gunifire'
'gunifire' anagrammed gives 'FIGURINE'.
(Other definitions for figurine that I've seen before include "moulded object" , "Small statue" , "Small piece of sculpture" , "Fine rug I change for a small carved body" , "Statuette" .)