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Designated Marksman Rifle
A designated marksman rifle (DMR) is a modern telescopic sight, scoped high-Accuracy and precision, precision rifle used by infantry in the designated marksman (DM) role. It generally fills the engagement effective range, range gap between a service rifle and a dedicated sniper rifle, at around . DMRs are distinguished from sniper rifles in that they are semi-automatic rifle, semi-automatic to provide higher rate of fire, rates of fire (with some also having selective fire to switch to Burst mode (weapons), burst or Automatic firearm, automatic) and have larger magazine (firearms), magazine capacities (10, 20, or 30 rounds depending on the firearm and operational requirements) to allow rapid engagement of multiple targets. DMRs have to be effective, in terms of probability of kill, hit rates and terminal ballistics, at application ranges exceeding those of ordinary assault rifles and battle rifles, but do not require the extended-range performance of a dedicated sniper rifle. DMR ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Assault Rifle
An assault rifle is a select fire rifle that uses an intermediate cartridge, intermediate-rifle cartridge and a Magazine (firearms), detachable magazine.C. Taylor, ''The Fighting Rifle: A Complete Study of the Rifle in Combat'', F.A. Moyer ''Special Forces Foreign Weapons Handbook'', R.J. Scroggie, F.A. Moyer ''Special Forces Combat Firing Techniques'', Musgave, Daniel D., and Thomas B. Nelson, ''The World's Assault Rifles'', vol. II, The Goetz Company, Washington, D.C. (1967): 1 Assault rifles were first put into mass production and accepted into widespread service during World War II. The first assault rifle to see major usage was the German StG 44, a development of the earlier Maschinenkarabiner 42(H), Mkb 42.''Firearms: The Life Story of a Technology'', by Roger Pauly. Greenwood Publishing Group. 2004. pp. 145–146 [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fully Powered Cartridge
A fully powered cartridge, also called full-power cartridge or full-size cartridge, is an umbrella term describing any rifle cartridge that emphasizes ballistics performance and single-shot accuracy, with little or no concern to its weight or recoil. The term generally refers to traditional cartridges used in machine guns, bolt action and semi-automatic service rifles and select fire battle rifles prior to, during and immediately after the World Wars and into the early Cold War era, and was a retronym originally made to differentiate from intermediate-power rifle cartridges that gained widespread adoption into military service after World War II. Full-power cartridges often have a caliber comparable to or greater than and a maximum effective range of at least , and are intended for engaging targets beyond . However, cartridges with calibers as narrow as have been described as being a full-power rifle cartridge. According the cartridge's overall length (COL), full-power ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Combat Unit
Military organization ( AE) or military organisation ( BE) is the structuring of the armed forces of a state so as to offer such military capability as a national defense policy may require. Formal military organization tends to use hierarchical forms (see Modern hierarchy for terminology and approximate troop strength per hierarchical unit). In some countries, paramilitary forces are included in a nation's armed forces, though not considered military. Armed forces that are not a part of military or paramilitary organizations, such as insurgent forces, often emulate military organizations, or use these structures. History The use of formalized ranks in a hierarchical structure came into widespread use with the Roman Army. The Roman Army was organized into legions, each comprising around 5000 soldiers and led by a legate. Each legion was further divided into centuries which were led by centurions. In modern times, executive control, management and administration o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caliber
In guns, particularly firearms, but not #As a measurement of length, artillery, where a different definition may apply, caliber (or calibre; sometimes abbreviated as "cal") is the specified nominal internal diameter of the gun barrel Gauge (firearms), bore – regardless of how or where the bore is measured and whether the finished bore matches that specification. It is measured in inches or in millimetres, millimeters]ref name=barnes2016-p9> In the United States it is expressed in hundredths of an inch; in the United Kingdom in thousandths; and elsewhere in millimeters. For example, a US "45 caliber" firearm has a barrel diameter of roughly 0.45 inches (11.43mm). Barrel diameters can also be expressed using metric dimensions. For example, a "9 mm pistol" has a barrel diameter of about 9 millimeters. Since metric and US customary units do not convert evenly at this scale, metric conversions of caliber measured in decimal inches are typically approximations of the precise spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MSSR Gen 5
The abbreviation MSSR can refer to various concepts: * The Molecular Screening Shared Resource (2004-Present), a facility at the University of California, Los Angeles, Dedicated to High-throughput_screening. * The Moldavian Soviet Socialist Republic The Moldavian Soviet Socialist Republic or Moldavian SSR (, mo-Cyrl, Република Советикэ Сочиалистэ Молдовеняскэ), also known as the Moldovan Soviet Socialist Republic, Moldovan SSR, Soviet Moldavia, Sovie ... (1940-1991), a constituent republic of the Soviet Union. * A ''Monopulse Secondary Surveillance Radar'', an advanced secondary surveillance radar. * The Marine Scout Sniper Rifle, a sniper rifle developed by the Philippine Marine Corps. {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ergonomics
Ergonomics, also known as human factors or human factors engineering (HFE), is the application of Psychology, psychological and Physiology, physiological principles to the engineering and design of products, processes, and systems. Primary goals of human factors engineering are to reduce human error, increase productivity and system availability, and enhance safety, health and comfort with a specific focus on the interaction between the human and equipment. The field is a combination of numerous disciplines, such as psychology, sociology, engineering, biomechanics, industrial design, physiology, anthropometry, interaction design, visual design, user experience, and user interface design. Human factors research employs methods and approaches from these and other knowledge disciplines to study human behavior and generate data relevant to previously stated goals. In studying and sharing learning on the design of equipment, devices, and processes that fit the human body and its Cog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stock (firearms)
A gunstock or often simply stock, the back portion of which is also known as a shoulder stock, a buttstock, or simply a butt, is a part of a long gun that provides structural support, to which the barrel, action, and firing mechanism are attached. The stock also provides a means for the shooter to firmly brace the gun and easily aim with stability by being held against the user's shoulder when shooting the gun, and helps to counter muzzle rise by transmitting recoil straight into the shooter's body. The tiller of a crossbow is functionally the equivalent of the stock on a gun. History and etymology The term stock in reference to firearms dates to 1571 is derived from the Germanic word ''Stock'', meaning tree trunk, referring to the wooden nature of the gunstock. Early hand cannons used a simple stick fitted into a socket in the breech end to provide a handle. The modern gunstock shape began to evolve with the introduction of the arquebus, a matchlock with a longer barrel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Recoil
Recoil (often called knockback, kickback or simply kick) is the rearward thrust generated when a gun is being discharged. In technical terms, the recoil is a result of conservation of momentum, for according to Newton's third law the force required to accelerate something will evoke an equal but opposite reactional force, which means the forward momentum gained by the projectile and exhaust gases (ejectae) will be mathematically balanced out by an equal and opposite momentum exerted back upon the gun. Basics Any launching system (weapon or not) generates recoil. However recoil only constitutes a problem in the field of artillery and firearms due to the magnitude of the forces at play. Gun chamber pressures and projectile acceleration forces are tremendous, on the order of tens to hundreds mega pascalAs a perspective, the atmospheric pressure is roughly 0.1 megapascal. and tens of thousands of times the acceleration of gravity ( g's), both necessary to launch the projectile a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Accurizing
Accurizing is the process of improving the accuracy and precision of a gun (firearm or airgun). For shooting sport, accuracy is the gun's ability to hit exactly what the shooter is aiming at, and precision is the ability to hit the same place over and over again in a repeatable fashion. Both are the goals of accurizing, which generally concentrates on four different areas: *Usability: Enhancements that give the shooter a firmer and more controlled hold on the firearm, as well as a more consistent trigger (firearms), trigger pull. Better design ergonomics is often employed, such as adjustable buttstocks and grips with more vertical angles that are natural to the human hand and wrist (e.g. pistol grip). Spirit levels are often mounted to prevent cant (shooting), canting, which can vary the points of impact. Weapon mounts such as bipods, monopod#Firearms, monopods, benchrests, shooting sticks (weapon mount), shooting sticks or simply sandbags can provide a more stable and relaxed pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bipod
A bipod is a V-shaped portable attachment that helps support and steady a device, usually a weapon such as a long gun or a mortar. The term comes from the Latin prefix and Greek root , meaning "two" and "foot" respectively. Bipods are designed to support the weight of the weapon's front portion and barrel, and provide significant stability against unwanted side-to-side movements (i.e. canting) while allowing free movements pivoting around the transverse axis ( pitching). Most modern bipods have foldable and/or telescoping legs, and allow some limited movements around the vertical axis (panning) and even the longitudinal axis ( tilting). A bipod by itself, with only two supporting legs, is not completely stable and needs to be reinforced by at least one more point of support to be steady, especially against the horizontal shearing force from recoils. This third point of support is typically the buttstock that is firmly pushed/braced against the shooter's body, but can a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
