Eg, handguns (5,4)
I believe the answer is:
small arms
'eg handguns' is the definition.
(handgun is a kind of small-arm)
This is the entire clue.
(Other definitions for small arms that I've seen before include "Hand-held weapons" , "those of little calibre" , "e.g. Guns" , "More than one weapon" , "Portable weapons" .)