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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 ...
It is similar in concept to the earlier commercial Weaver rail mount used to mount telescopic sights, but is taller and has wider slots at regular intervals along the entire length. The MIL-STD-1913 locking slot width is 0.206 in (5.23 mm). The spacing of slot centres is 0.394 in (10.01 mm) and the slot depth is 0.118 in (3.00 mm). [8]
A sechsschartenturm is a non-rotating turret made of steel up to 12 inches thick, pierced by six loopholes. Each turret operated two MG34 machine guns on rotating mounts. . This turret only has four loopholes; the other two were sealed as they faced the cliff and were of no military val
The wall gun or wall piece was a type of smoothbore firearm used in the 16th through 19th centuries by defending forces to break the advance of enemy troops. Essentially, it was a scaled-up version of the army's standard infantry musket , operating under the same principles, but with a bore of up to one-inch (25.4 mm) calibre .
A modern self-propelled gun mounts a large artillery gun but less armour. Lighter vehicles may carry a one-man turret with a single machine gun, occasionally the same model being shared with other classes of vehicle, such as the Cadillac Gage T50 turret/weapons station. The size of the turret is a factor in combat vehicle design.
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.
The Panama mount featured a central concrete pier surrounded by a concrete-embedded steel ring. The Panama mount was constructed as needed to provide 180, 270, and 360 degrees of traverse, with its gun mounted on a central 10 ft (3.0 m) diameter concrete pier surrounded by a full or partial approximately 36 ft (11 m) concrete-embedded steel rail.