Les Morfalous (literally The Greedy-Guts, in French argot) is a 1984 French action-comedy movie by Henri Verneuil starring Jean-Paul Belmondo, featuring the French Foreign Legion during the Second World War.
The following guns were used in the movie Les Morfalous
When the German soldiers attacked the French legionnaires, they are using MG34 machine guns.
Madsen Model 1940
Madsen Model 1940 machine guns are seen mounted on the trucks in the opening scene. They are mocked up to resemble belt fed Browning M1919 machine guns by fitting a cosmetic box over the bottom and rear of the receiver, but they can be identified as Madsens by the shape of the top of the receiver and the top loading magazine well visible on the left side of the top of the weapon. In order to make the gun appear to be belt fed the last round on the ammunition belt has simply been hooked into the magazine well, which on the Madsen is coincidentally a shape which easily allows this.
Other
Model 24 Stielhandgranate
When legionaries dress German uniform, Sgt. Pierre Augagneur (Jean-Paul Belmondo) took Model 24 Stielhandgranate but never used it.
Flare Pistol
A flare pistol is used by Germans.
Rocket Launcher
A rocker launcher is seen in hands of French soldiers in the final scene. It is a little blurry and hard to identify. Due to its size it can be M20 "Super Bazooka" or RL-83 Blindicide or some other launcher.
Trivia
SK-105 Kürassier Light Tank
Austrian SK-105 Kürassier light tank (produced in 1970s) acts as a German tank.
Panhard AML 90 Armoured Car
French Panhard AML 90 armoured car (produced in 1960s) acts as a German armoured car.