Method of operating firearm - uses gas or powder charge fed into chamber to propel round

摘要

The method involves firing a projectile from a firearm chamber without using a cartridge. The propellant charge is introduced directly into the chamber as a gas or powder. The charge can be ignited by a spark produced electrically or mechanically - The wearing surfaces of the firearm can be lined with ceramic to give a high heat resistance. The rounds can have guide skirts. The rounds can be fed into the firing chamber by a spring or using blow-back gases.