Like some weapons Grant repositioned in land bordering the sea (5-5)
I believe the answer is:
short-range
'like some weapons' is the definition.
(as in short-range missiles)
'grant repositioned in land bordering the sea' is the wordplay.
'repositioned' indicates anagramming the letters.
'in' is an insertion indicator.
'land bordering the sea' becomes 'shore'.
'grant' is an anagram of 'trang'.
'trang' placed into 'shore' is 'SHORT-RANGE'.
(Other definitions for short-range that I've seen before include "Relating to a limited period or distance" , "Not stretching far into the future" .)