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FN SPR
The FN Special Police Rifle (FN SPR) is a bolt-action sniper rifle marketed by FNH USA, a subsidiary of the Belgian company FN Herstal. Design details The rifle is manufactured at the U.S. Repeating Arms Company (owned by FN de Herstal) to FN specifications using Winchester Model 70 actions. All current models of the SPR come in one of a variety of McMillan synthetic stocks. The earliest rifles were shipped in the H-S Precision aluminum chassis fiberglass version of the Winchester Marksman stock. While these "First Generation" rifles were simply dropped into the aluminum bedding blocks of the H-S Precision stock, the later guns are all glass bedded by hand. FN Special Police Rifles of all iterations are noted for being both very accurate (0.5 MOA or somewhat less is not uncommon) and very low maintenance, featuring Parkerized metal finish, synthetic stocks, and a chrome-lined bore in the barrel. A chrome-lined bore offers a more durable, more corrosion resistant, and easier-to-c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minute Of Arc
A minute of arc, arcminute (arcmin), arc minute, or minute arc, denoted by the symbol , is a unit of angular measurement equal to of one degree. Since one degree is of a turn (or complete rotation), one minute of arc is of a turn. The nautical mile (nmi) was originally defined as the arc length of a minute of latitude on a spherical Earth, so the actual Earth circumference is very near . A minute of arc is of a radian. A second of arc, arcsecond (arcsec), or arc second, denoted by the symbol , is of an arcminute, of a degree, of a turn, and (about ) of a radian. These units originated in Babylonian astronomy as sexagesimal subdivisions of the degree; they are used in fields that involve very small angles, such as astronomy, optometry, ophthalmology, optics, navigation, land surveying, and marksmanship. To express even smaller angles, standard SI prefixes can be employed; the milliarcsecond (mas) and microarcsecond (μas), for instance, are commonly used in ast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bolt-action Rifles Of Belgium
Bolt-action is a type of manual firearm action that is operated by ''directly'' manipulating the bolt via a bolt handle, which is most commonly placed on the right-hand side of the weapon (as most users are right-handed). Most bolt-action firearms use a rotating bolt design, where the handle must first be rotated upward to unlock the bolt from the receiver, then pulled back to open the breech and allowing any spent cartridge case to be extracted and ejected. This also cocks the striker within the bolt (either on opening or closing of the bolt depending on the gun design) and engages it against the sear. When the bolt is returned to the forward position, a new cartridge (if available) is pushed out of the magazine and into the barrel chamber, and finally the breech is closed tight by rotating the handle down so the bolt head relocks on the receiver. Bolt-action firearms are generally repeating firearms, but some single-shot breechloaders also use bolt-action design ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hostage Rescue Team (FBI)
The Hostage Rescue Team (HRT) is the elite Police tactical unit, tactical unit of the Federal Bureau of Investigation (FBI). The HRT was formed to provide a full-time Federal law enforcement in the United States, federal law enforcement tactical capability to respond to major terrorist incidents throughout the United States. Today, the HRT performs a number of tactical law enforcement and national security functions in high-risk environments and conditions and has deployed overseas, including with military Joint Special Operations Command units. The HRT, along with the FBI Crisis Negotiation Unit, Crisis Negotiation Unit (CNU), the FBI Special Weapons and Tactics Teams#SWAT Operations Unit, SWAT Operations Unit that manages the FBI Special Weapons and Tactics Teams, field office SWAT program, and the Tactical Helicopter Unit (THU), comprise the Tactical Section of the FBI's FBI Critical Incident Response Group, Critical Incident Response Group (CIRG). The Hostage Rescue Team was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fluting (firearms)
In firearms terminology, fluting refers to the removal of material from a cylindrical surface, usually creating grooves. This is most often the barrel of a rifle, though it may also refer to the cylinder of a revolver or the bolt of a bolt action rifle. In contrast to rifle barrels and revolver cylinders, rifle bolts are normally helically fluted, though helical fluting is sometimes also applied to rifle barrels. The main purpose of fluting is to reduce weight, and to a lesser extent increase rigidity for a given total weight or increase surface area to make the barrels less susceptible for overheating for a given total weight. However, for a given diameter, while a fluted barrel may cool more quickly, a non-fluted barrel will be stiffer and be able to absorb a larger amount of total heat at the price of additional total weight. In barrel chamber In the barrel chamber, fluting refers to gas relief flutes/grooves used to ease the extraction of cartridges. They may also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Columbia, South Carolina
Columbia is the capital of the U.S. state of South Carolina. With a population of 136,632 at the 2020 census, it is the second-largest city in South Carolina. The city serves as the county seat of Richland County, and a portion of the city extends into neighboring Lexington County. It is the center of the Columbia metropolitan statistical area, which had a population of 829,470 in 2020 and is the 72nd-largest metropolitan statistical area in the nation. The name Columbia is a poetic term used for the United States, derived from the name of Christopher Columbus, who explored for the Spanish Crown. Columbia is often abbreviated as Cola, leading to its nickname as "Soda City." The city is located about northwest of the geographic center of South Carolina, and is the primary city of the Midlands region of the state. It lies at the confluence of the Saluda River and the Broad River, which merge at Columbia to form the Congaree River. As the state capital, Columbia is the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fabrique Nationale De Herstal
Fabrique Nationale Herstal (), trading as FN Herstal and often referred to as Fabrique Nationale or simply FN, is a leading firearms manufacturer based in Herstal, Belgium. It is currently the largest exporter of military small arms in Europe. FN Herstal is owned by the Herstal Group holding company, which is in turn owned by the regional government of Wallonia. The Herstal Group also owns the Browning Arms Company and the U.S. Repeating Arms Company ( Winchester). FN America is the U.S. subsidiary of FN Herstal, which was formed by the merger of FN's previous two American subsidiaries – FN Manufacturing and FNH USA. A United Kingdom based manufacturing facility, FNH UK, is also in operation. Firearms designed and/or manufactured by FN include the Browning Hi-Power and Five-seven pistols, the FAL, FNC, F2000 and SCAR rifles, the P90 submachine gun, the M2 Browning, MAG, Minimi and the FN Evolys machine guns; all have been commercially successful.Miller, David (2001). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
General Purpose Machine Gun
A general-purpose machine gun (GPMG) is an air-cooled, usually belt-fed machine gun that can be adapted flexibly to various tactical roles for light and medium machine guns. A GPMG typically features a quick-change barrel design calibered for various fully powered cartridges such as the 7.62×51mm NATO, 7.62×54mmR, 7.5×54mm French, 7.5×55mm Swiss and 7.92×57mm Mauser, and be configured for mounting to different stabilizing platforms from bipods and tripods to vehicles, aircraft, boats and fortifications, usually as an infantry support weapon or squad automatic weapon. History The general-purpose machine gun (GPMG) originated with the MG 34, designed in 1934 by Heinrich Vollmer of Mauser on the commission of Nazi Germany to circumvent the restrictions on machine guns imposed by the Treaty of Versailles. It was introduced into the Wehrmacht as an entirely new concept in automatic firepower, dubbed the ''Einheitsmaschinengewehr'', meaning "universal machine gun" in Germ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M240 Machine Gun
The M240 – officially the Machine Gun, 7.62 mm, M240 – is the U.S. military designation for the FN MAG, a family of belt-fed, gas-operated medium machine guns that chamber the 7.62×51mm NATO cartridge. The M240 has been used by the United States Armed Forces since the late 1970s. It is used extensively by infantry, most often in rifle companies, as well as on ground vehicles, watercraft and aircraft. Though it is heavier than some comparable weapons, it is highly regarded for reliability and its standardization among NATO members is a major advantage. All variants are fed from disintegrating belts and are capable of firing most types of 7.62 mm (.30/.308 cal) NATO ammunition. M240 variants can be converted to use non-disintegrating belts. There are significant differences in weight and some features among some versions which restrict the interchangeability of parts. The M240s used by the U.S. military are currently manufactured by FN America, the American s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sniper Rifles
A sniper rifle is a high-precision, long-range rifle. Requirements include accuracy, reliability, mobility, concealment and optics for anti-personnel, anti-materiel and surveillance uses of the military sniper. The modern sniper rifle is a portable shoulder-fired weapon system with a choice between bolt-action or semi-automatic action, fitted with a telescopic sight for extreme accuracy and chambered for a high-ballistic performance centerfire cartridge. History The Whitworth rifle was arguably the first long-range sniper rifle in the world. Designed by Sir Joseph Whitworth, a prominent British engineer, it used barrels with hexagonal polygonal rifling, which meant that the projectile did not have to bite into the rifling grooves as was done with conventional rifling. His rifle was far more accurate than the Pattern 1853 Enfield, which had shown some weaknesses during the recent Crimean War. At trials in 1857, which tested the accuracy and range of both weapons, Whitworth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parkerized
Phosphate conversion coating is a chemical treatment applied to steel parts that creates a thin adhering layer of iron, zinc, or manganese phosphates, to achieve corrosion resistance, lubrication, or as a foundation for subsequent coatings or painting. It is one of the most common types of conversion coating. The process is also called phosphate coating, phosphatization, phosphatizing, or phosphating. It is also known by the trade name Parkerizing, especially when applied to firearms and other military equipment. A phosphate coating is usually obtained by applying to the steel part a dilute solution of phosphoric acid, possibly with soluble iron, zinc, and/or manganese salts. The solution may be applied by sponging, spraying, or immersion. Phosphate conversion coatings can also be used on aluminium, zinc, cadmium, silver and tin. Types The main types of phosphate coatings are manganese, iron, and zinc. * Manganese phosphate coatings are used both for corrosion resistance a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winchester Model 70
The Winchester Model 70 is a bolt-action sporting rifle. It has an iconic place in American sporting culture and has been held in high regard by shooters since it was introduced in 1936, earning the moniker "The Rifleman's Rifle". The action has some design similarities to Mauser designs and it is a development of the earlier Winchester Model 54, itself based on a Mauser 98-type action. The Model 70 was originally manufactured by the Winchester Repeating Arms Company between 1936 and 1980. From the early 1980s until 2006, Winchester rifles were manufactured by U.S. Repeating Arms under an agreement with Olin Corporation, allowing USRA to use the Winchester name and logo. Model 70s were built in New Haven, Connecticut, from 1936 to 2006, when production ceased. In the fall of 2007, the Belgian company FN Herstal announced that Model 70 production would resume. As of 2012, new Winchester Model 70 rifles were being made by FN Herstal in Columbia, South Carolina. In 2013, assembly wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
