The Man on the Roof

The Man on the Roof (Swedish title: Mannen på taket) is a Swedish 1976 crime/action movie. It was based on the 1971 Sjöwall-Wahlöö novel "The Abominable Man". It follows Homicide detective Martin Beck in his investigation of a brutal murder of a fellow policeman. The investigation eventually leads to a shootout in downtown Stockholm.

The following weapons were used in the film The Man on the Roof:
WARNING! POSSIBLE SPOILERS!

Smith & Wesson Model 52

Detective Gunvald Larsson carries a Smith & Wesson Model 52 .38 special during the movie.

A closeup of the S&W M52

A wounded Larsson with an improvised tourniquet on his head brandishing his S&W Model 52 during the end-movie shootout.

Walther PP

The Walther PP and the Walther PPK were the most common service pistols of the Swedish Police Force until it was replaced by the SIG-Sauer P226 in the 1990's. A Walther PP is carried by Martin Beck in the movie but he never fired it.

Post war Walther PP Pistol - .32 ACP.

Carl Gustav M/45

The M/45B is used by the Swedish S.W.A.T team during the shootout.

Swedish K / Carl Gustav M45 Submachine Gun - 9x19mm‎. The Swedish police variant, a M/45B like the military version, had an added single-shot switch.

Mauser Rifle Series|"Swedish Mauser" 6.5x55mm

In the shootout the gunman is both seen and described as using a "Mauser" fitted with a scope. He is most likely using the "Swedish Mauser" 6.5x55mm due to its availability in Sweden.

Mauser 1896/38 Rifle (Carl Gustaf) - 6.5x55mm

Mock up M1941 Johnson machine gun

In the original novel the gunman uses a M1941 Johnson machine gun throughout the shootout. For the movie a FN FAL was converted and made to look like a Johnson machine gun but with visual differences. The charging handle is on the right side on the original but on the left in the FN FAL movie version. The original Johnson MG also does not have a carrying handle unlike the FN FAL. The original Johnson has a left side magazine housing, but in the movie version a false magazine housing had been welded on the left side of the FN FAL. For scenes that required the weapon to be fired the camera was angled or the weapons bottom part was somehow hidden as to conceal a regular bottom fed FN FAL clip.

The gunman with his mockup Johnson LMG. Note the classical FN FAL carrying handle and the equaliy distinctive breech. Note also there the lack of a charging handle which is set on the left side of the FN FAL but on the right side of the original Johnson LMG.

An original M1941 Johnson LMG

A FN FAL, used as the basis of the Johnson LMG mockup in the movie.