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The oldest shotgun houses were built without indoor plumbing, which was often added later, often on the back of the house, sometimes crudely. "Double-barrel" or "double" shotgun houses are a semi-detached configuration, consisting of two houses sharing a central wall, allowing more houses to be fit into an area. "Camelback" shotgun houses ...
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 casemate is a fortified gun emplacement or armoured ... wall" means a double city wall with the ... upon the superstructure in exposed single mounts.
Individual soldiers were often forced to carry a breaching shotgun in addition to their standard-issue rifle, but the Masterkey removes this need. The system consists of a shortened Remington 870 12 gauge pump-action intended to be mounted under a firearm's barrel, similarly to the M203 grenade launcher. It has a 3-round internal tubular ...
Colloquially, the term dovetail rail usually refer to any straight mounting bracket with an inverted trapezoid cross-section (though the hexagonal-profiled Weaver rail and Picatinny rail are also derivative dovetail designs) running parallel to the bore for mounting a scope or diopter sight to a rifle. These are sometimes also called "tip-off ...
The Block 1 CIWS mounts (hydraulic) also fired at 3,000 rounds per minute with an extended magazine drum holding 1,550 rounds. The Block 1A and newer (pneumatic driven) CIWS mounts fire at a rate of 4,500 rounds per minute with a 1,550-round magazine. The velocity of the rounds fired is about 3,600 feet per second (1,100 m/s).
left-to-right: .410 bore, 28 gauge, 20 gauge, and 12 gauge shotgun shells. The six most common shotgun gauges, in descending order of size, are the 10 gauge, 12 gauge, 16 gauge, 20 gauge, 28 gauge, and .410 bore. [7] By far the most popular is the 12 gauge, [7] particularly in the United States. [8]
The overwhelming majority of carriage designs enabled the gun to rotate backwards and down behind a parapet, or into a pit protected by a wall, after it was fired; a small number were simply barbette mounts on a retractable platform. Either way, retraction lowered the gun from view and direct fire by the enemy while it was being reloaded.
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