Carry empty 'Equalizer' gun (5)
I believe the answer is:
luger
'gun' is the definition.
(type of pistol)
'carry empty equalizer' is the wordplay.
'carry' becomes 'lug' (lugging is a kind of carrying**).
'empty' means to remove the middle letters.
'equalizer' with its centre removed is 'er'.
'lug'+'er'='LUGER'
(Other definitions for luger that I've seen before include "German semi-automatic pistol" , "Type of (German) automatic pistol" , "Weapon" , "She goes down rapidly" , "competes in winter Olympics?" .)