Berlin sharpshooter's orphan (5)
I believe the answer is:
annie
I believe this clue is a double definition.
'berlin sharpshooter's' is the first definition.
(reference to Annie Get Your Gun by Irving Berlin)
'orphan' is the second definition.
(I've seen this before)
(Other definitions for annie that I've seen before include "Inane (anag) - girl (with a gun?)" , "musical movie" , "- Get your Gun, musical" , "Woman" , "Musical about red-handed Orphan girl" .)