The firearms used in the 1969 British film If... include the following...
Lee-Enfield No.4 bolt-action rifle
Used by the students serving in the public school's Combined Cadet Force and was used by the students and British soldiers during the shootout towards the end of the film.
Error creating thumbnail: File missing Lee-Enfield No.4 Mk.I - .303 the most common World War Two Rifle, in service between 1941–Present
Error creating thumbnail: File missing Public School CCF Student charges in a Bayonet attack.
Bren Light Machine Gun
Used by Mick Travis (Malcolm McDowell ) during the shootout towards the end of the film.
Error creating thumbnail: File missing Bren .303 caliber
Error creating thumbnail: File missing Travis shooting a Bren from the rooftop.
Webley Mk IV Revolver
Used by The Girl (Christine Noonan ) to shoot the school headmaster in the head.
Error creating thumbnail: File missing Webley Mk VI .455 Webley
M1 Garand rifles are seen racked up in the school's Combined Cadet Force armoury but are not used in the movie.
Error creating thumbnail: File missing M1 Garand semiautomatic Rifle with leather M1917 sling - .30-06
WW1 German Grenade Launcher
A German grenade launcher is seen in the cellar underneath the stage amongst various munitions.
Sten Mark III submachine gun
Used by Mick's friends, the students and British soldiers during the shootout towards the end of the film.
Error creating thumbnail: File missing Sten Mk III Submachine gun - 9x19mm
Vickers medium machine gun
Error creating thumbnail: File missing Vickers Mark 1 Machine Gun, .303 British
Error creating thumbnail: File missing CCF Students set up a Vickers machine gun.
Lee-Enfield No.1 MkIII* rifle
A collection of Lee-Enfield No.1 MkIII* rifles can be seen in the cache of military firearms and ammunition under the main hall of the school.
Error creating thumbnail: File missing Lee-Enfield No.1 Mk.III* - .303 British. This was the main battle rifle of British and Commonwealth forces during the First World War, introduced in 1907 it has seen action throughout the 20th century.
MP40
MP40s were seen among the collection of military firearms under the main hall.
Error creating thumbnail: File missing MP40 9x19mm
Springfield M1903A3 rifle
Springfield M1903A3 rifles can be seen in the Combined Cadet Force armoury
Error creating thumbnail: File missing The World War 2 Springfield Rifle - the Model 03-A3. This was a simplified version of the 1903 to supplement the M1 Garand for troops in World War 2. Many Marines and Army rangers hit the battlefield with the 03-A3. This example was built at the Remington plant. During World War 2 - only Remington and Smith Corona (the typewriter company) built 03A3 rifles from the original WW1 tooling from Rock Island - .30-06
Unknown Pistol
File:If...TravisPistol.jpg
Error creating thumbnail: File missing Travis weilding what looks like an Air Pistol.