Revolver for an artist? (6)
I believe the answer is:
turner
I believe this clue is a double definition.
'revolver' is the first definition.
(something which turns or revolves)
'for an artist?' is the second definition.
(painter JMW Turner)
(Other definitions for turner that I've seen before include "English artist - lathe" , "JMW ------, English artist renowned for his land- and sea-scapes" , "English painter - revolving item?" , "Pianist's assistant" , "Lathe user" .)