A device on the gun barrel that uses high-pressure gas to expel propellant fumes before the breech opens, preventing them from entering the crew compartment.

High Explosive (HE) round: an artillery or mortar projectile containing explosive filler designed to inflict damage through blast and fragmentation effects.

Recoil system using a combination of liquid and compressed gas to absorb and return energy from firing.

A device attached to a firearm's muzzle to redirect propellant gases, reducing recoil and muzzle rise during firing.