Sausages (7)
(Other definitions for snags that I've seen before include "Drawbacks" , "Unexpected obstacles" , "Problems" , "Hitches" , "Unforeseen obstacles" .)
'sausages' is the definition.
(banger can mean a sausage)
This is all the clue.
(Other definitions for bangers that I've seen before include "Crates" , "Sausages" , "Loud fireworks" , "explosives?" .)