Automatic rifle firing mechanism - has breech forced forward by weight and spring system and returned for firing

摘要

An automatic weapon has a barrel (1) with an entry point at the rear into which a cartridge magazine (5) is fitted and behind this an extension (2) containing the firing pin and ejector. Inside the barrel is a firing tube (3) with a breech (12) at the rear into which a cartridge (23) is inserted. When the cartridge is fired, the whole firing tube is forced forwards against a main spring (13). The gases from the explosion pass through a hole(14) to enter a chamber on (8) the top of the firing table and force forwards a mass (10) inside the chamber. This causes the tube to enable forwards. This enables the spent cartridge to be ejected and the next the in the magazine to be pushed up by its spring, ready for firing. The weight is returned by another firing (11) and carries back. The firing tube so that this cartridge enters the breech(12) and is pushed back against the firing pin and is fired.