Johnny Dangerously was a 1984 screwball comedy, directed by Amy Heckerling (Fast Times at Ridgemont High / Clueless), starring Michael Keaton, Joe Piscopo, Peter Boyle and Danny DeVito. The film was a farcical tale of a 'good kid' gone bad and at times, "broke the '4th wall'" in that the title character starts addressing the audience directly in the middle of the scene.
Early in the film, Johnny Dangerously wields an anachronistic Smith & Wesson Model 36 "Chiefs Special". It is identified by the style of ejector rod and the flat latch cylinder release.
Colt New Service
One of Jocko Dundees' henchmen carries a Colt New Service Revolver during the Casino heist.
Dundees' gang pulls their guns on an unwitting delivery man who drops off a suspicious crate at their office. One of the men carries a Smith & Wesson M&P Revolver.
Star Model B
The Star Model B is used by one of Dundees' men, presumably standing in for a M1911A1 pistol.
Thompsons M1928 Submachine guns are used extensively in the film, mostly by assassins sent by Moronie to kill Johnny Dangerously.
Hudson Replica Thompson M1928
A Hudson replica Thompson Submachine gun is used as evidence by District Attorney Kelly (Griffin Dunne) during the trial of Roman Moronie.
Short Thompson Submachine gun
A short barreled Thompson submachine gun is smuggled to Johnny as he plots his escape from prison. It is made from a chopped up Hudson Thompson Replica and each piece, rather unrealistically, snaps together to form a firearm, though it is a bluff. When Johnny escapes he tosses the gun and it breaks apart.
Danny Vermin's 88 Magnum
Danny Vermin (Joe Piscopo) holds a gun he calls 'an 88 magnum', supposedly a revolver custom made for him. The mythological .88 Magnum revolver however, is just a long barreled Colt New Service Revolver chambered in .45 long colt.