Remove weapon from some lunar module (5)
I believe the answer is:
unarm
'remove weapon from' is the definition.
(to unarm someone is to remove their weapon)
'some lunar module' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'UNARM' can be found hidden inside 'lunar module'.
(Other definitions for unarm that I've seen before include "drastic thing to do to McAlpine's Fusiliers!" , "Make harmless" , "Neutralise defence" , "Disable" , "Deprive of all weapons" .)