Summary: An instructional military training film describing the workings of the BESA 7.92mm machine gun.
Description: (Reel 1) The BESA 7.92mm belt-fed machine gun is for use in AFV and fires at a rate of 750 rounds per minute. It works as follows, in two stages: cock-load-lock-fire- unlock-extract-eject -feed. The procedure is: when the trigger guard is moved to the rear the gun is locked; a simplified drawing shows the loading of the cartridge; the breech block is arrested; the piston continues forward pushing the cartridge towards the end until the piston hits the firing pin and the cartridge is fired. Some gases behind the bullet divert to the piston and move it back unlocking the breech mechanism holding the shell to extract it until it reaches a gap and is ejected from the gun. A top view of the feed lever feedhorn examines the backward movement of the piston when a new cartridge is moved in and presented for loading ie feed. A rear and top view also illustrate this. (Reels 2 and 3) An extremely detailed examination of the gun and its mechanisms follows supplemented by CU diagrams and sections of the gun. (Reel 4) A reiteration of the complete working of the gun from cocking to feeding is depicted by a sectioned gun in CU using slow motion to show the working parts very clearly.
