A gun shield is a flat piece of armor designed to be mounted on a crew-served weapon such as a machine gun, automatic grenade launcher, or artillery piece.
A U.S. Marine manning an M240 machine gun equipped with a gun shield
An Australian M113 armoured personnel carrier armed with an M2 Browning with a gun shield during the Vietnam War.
A United States Navy personnel in a Douglas SBD Dauntless aims a Browning .30 AN/M2 machine gun equipped with a shield
A gun mantlet is a movable section of armour fitted around the main gun of a tank or other armoured fighting vehicle. Because the gun must pivot vertically, the front of the turret requires a sizeable
Gun shield
…Transparent Armor Gun Shield Gun mantlet Hillbilly armor…
Gun mantlet, highlighted in red, on an American M1A1 Abrams
"Pig head" mantlet on Stug III