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The saved weight can be used to mount a heavier, more powerful gun or alternatively increase the vehicle's armor protection in comparison to regular, turreted tanks. However, in combat the crew has to rotate the entire vehicle if an enemy target presents itself outside of the vehicle's limited gun traverse arc.
Casemate-mounted 5"/50 caliber gun on the USS North Dakota. A casemate is an armoured structure consisting of a static primary surface incorporating a limited-traverse gun mount: typically, this takes the form of either a gun mounted through a fixed armour plate (typically seen on tank destroyers and assault guns) or a mount consisting of a partial cylinder of armour "sandwiched" between ...
A rail system mounted on top of a SIG SG 550 A dovetail rail on a rifle receiver for mounting a sight. A rail integration system (RIS; also called a rail accessory system (RAS), rail interface system, rail system, mount, base, gun rail, or simply a rail [1]) is a generic term for any standardized attachment system for mounting firearm accessories via bar-like straight brackets (i.e. "rails ...
The mount is found on the left side of the rifle receiver, with machined cutouts for reduced weight and ease of installation; an example is the PSO-1 optical sight. Similar rails can also be found on rifles such as the Dragunov sniper rifle (SVD), the PSL rifle , the PKM as well as some AK series assault rifles from 1954 onwards.
The disappearing gun was a variation on the barbette gun; it consisted of a heavy gun on a carriage that would retract behind a parapet or into a gunpit for reloading. Barbettes were primarily used in coastal defences, but saw some use in a handful of warships, and some inland fortifications. The term is also used for certain aircraft gun mounts.
A wing turret is a gun turret mounted along the side, or the wings, of a warship, off the centerline. The positioning of a wing turret limits the gun's arc of fire , so that it generally can contribute to only the broadside weight of fire on one side of the ship.
The ancient Greek Helepolis, a massive siege tower which mounted catapults, could also be considered a weapons platform. The next attempt to mount weapons on platforms was made at sea, with catapults and eventually cannon mounted on their final form as ships of the line before the advent of ironclad warships mounting turrets.
"Billy" Bishop demonstrates use of Foster Mounting to fire upwards. The "quadrant" of the mounting is visible immediately below the gun barrel. In early 1916 Sergeant Foster of 11 Squadron RFC improved the French hinged mounting for the upper wing Lewis gun on a Nieuport 11 or 16, by replacing the awkward double hinge of the French mount with a quadrant-shaped I-beam rail. [1]