What is a bore evacuator?

• A. A device located on the main gun that allows the escaping gases to exit the bore when fired.
• B. A device attached to the muzzle of the main gun which reduces recoil.
• C. The main armored body of a vehicle.
• D. The front and most heavily armored portion of a tank.

Answer: (A)

The bore evacuator is a device mounted on the main gun barrel that vents propellant gases out of the bore after firing. It sits near the rear of the barrel, around the breech area, and provides a path for the hot gases to escape rather than blowing back into the turret. By routing those gases up and out through vents, it keeps fumes away from the crew, preserves visibility for repeat shots, and helps protect the breech area from gas buildup. It’s not a muzzle device and it doesn’t directly reduce recoil; its purpose is to manage the exhaust gases produced when a round is fired.