Put away gun, sort he loaded to protect student (7)
I believe the answer is:
holster
'put away gun' is the definition.
(to put a gun in a holster)
'sort he loaded to protect student' is the wordplay.
'loaded' is an anagram indicator (loaded can mean drunk).
'to protect' is an insertion indicator.
'student' becomes 'l' (as in L-plates for learner drivers).
'sort'+'he'='sorthe'
'sorthe' with letters rearranged gives 'hoster'.
'hoster' placed around 'l' is 'HOLSTER'.
(Other definitions for holster that I've seen before include "Pistol sheath" , "Pistol-case" , "Gun-case" , "Holder for a hand-gun" , "armrest" .)