Answer:

gat

Answer	Crossword Clue
GAT	Gangster's gun
GAT	Hood's heater
GAT	Gangster's weapon

GAT	Channel between cliffs
GAT	Gangsta's piece
GAT	Piece of the street
GAT	Gangster's piece
GAT	Roscoe
GAT	Gangster's rod
GAT	Yegg's pistol
GAT	Heater

GAT	Heater in a speakeasy?
GAT	Hood's shooter
GAT	Felon's weapon
GAT	Channel through shoals
GAT	Hood's rod
GAT	Pistol, in old slang
GAT	Hood's gun
GAT	Moll's gun

GAT	Hood's "piece"
GAT	Rod
GAT	B-movie piece
GAT	Gangster's heater
GAT	Goon's gun
GAT	Hood's weapon
GAT	Hood's piece
GAT	Mobster's weapon

GAT	Pistol, in B movies
GAT	Goon gun
GAT	Pistol, in old gangster movies
GAT	Heavy's heater
GAT	Pistol, in B-movies
GAT	Mobster's "heater"
GAT	Pistol, slangily
GAT	Dillinger's derringer

GAT	Gun for a gangster
GAT	Gun, slangily
GAT	Gangland gun
GAT	Pistol, in pulp fiction
GAT	Thug's rod