Patent ID: 7302773

Claim:
A method of firing a firearm comprising the steps of: providing the firearm comprising a barrel comprising a barrel bore extending between a breech end and a muzzle end; providing an inert mass comprising a part of the firearm with a hollow bore, the hollow bore being substantially aligned with the breech end of the barrel; providing ammunition comprising a projectile and a cartridge case, the cartridge case comprising a main body; loading the ammunition in the firearm so that at least a portion of the main body of the cartridge case resides in the hollow bore; propelling the projectile toward the muzzle end of the barrel; substantially sealing the hollow bore with the cartridge case; moving the cartridge case and at least the part of the inert mass with the hollow bore in relation to the barrel; wherein the improvement comprises having at least a portion of the main body of the cartridge case disposed in the hollow bore during firing without the presence of any breech locking mechanism or part of the firearm disposed rearward of the cartridge case and arranged to prevent the cartridge case from getting completely out of the hollow bore during firing, whereby the method of firing is performed in a simple and reliable way allowing a simple and lightweight firearm construction.